![]() įinally, here is a Vibro Lap on Rear CoverĪdditionally, here is an internal memo of the Highland Park Merger with MK Diamond Products Announcement Not to mention, more accessories and Supplies Tumblers in the Highland Park Catalog Īdditional Accessories and Supplies In contrast, here is a floor model E-12 Highland Combination Unit Īdditionally, here are E-20 & E-70 Highland Park Combination Units Īlso, here are Model AB & A & B Arbors Īrbors with Splash Guards and Pans įlat Polishing Machine Highland Park Catalog Moreover, here are B50 & B52 Combination Units Īdditionally, here are E50 and E52 Combination Units Īlso, here is a B-12 Highland Park Combination Unit Ĭomparatively, here is a B-10 Combination Unit Ĭomparatively, here is a E10 Highland Combination Machine Interestingly, here is a A50 & A52 Highland Park Combination Unit In contrast, here is a Faceters Trim Saw By the same token, here is a Trim saw, “now with cross-feed vice” Additionally, here are more Trim Saws Comparatively, here is a Rapid Trim and Slabbing Saw Then again, here is a Combination Trim Saw Similarly, here is a Hi Speed Trim Saw with automatic feed attachment. Moreover, here are Slab saws with Lucite hoods. Likewise, here are 20″ slab saws with hoods.Įqually, here are 16″ to 18″ slab saws with power feed.įurthermore, here is a Slab saw for the small gem cutting shop. In addition, here is a 36 inch model U-1 rugged dependable slab saw with power feedĪlso, here is a 24″ model U-24 big rugged slab saw with power feed. Secondly, here is the Table of Contents page 1 Finally, I hope you find this information interesting and useful! Above all, it will take a little time to fully load… First of all, here is the 1970 / 71 Highland Park Lapidary Catalog Cover In conclusion, I hope you find this information interesting and useful! Incidentally, it will take a little time to fully load… ⇒ Correspondingly, please click on any page for a magnified view. ⇒ Finally, click on any page for a magnified view. To view a 1969-70 catalog, please click HERE Consequently, Faceting Machines, Congo Wheels and Expandable drums close out the catalog contents. In addition, these lapidary machines incorporate polishing wheels along with saw units. Most interestingly, this catalog shows many different combination machines. Furthermore, it further features trim saws. Thirdly, this catalog features slab saws with power feeds. Secondly, this vintage catalog features large lapidary saws. In addition, to view a 1969 catalog, please click HERE. Most interestingly, there is a current company who operates under the trade name Highland Park Lapidary. Furthermore, it features helpful hints for your hobby from 1970. We try to keep a good stock of replacement parts available and have videos on line to assist you in your rebuilding efforts.First of all, this is a rare and complete copy of Highland Park Lapidary Equipment Gem Cutting Equipment. ![]() NOTE: Running water based coolants will destroy your bearings over time and cause other components to rust. Sharpen your blade fairly often - lapidary diamond blades will need more sharpening when running in water than in oil based coolants Use a light oil such as WD-40 to spray down all the exposed metal components (feed screw, cross feed screw, cross feed rails, carriage way rails, roller bearings and any other exposed metal part). Leave the hood open on your saw and use a clamp on fan to dry the saw out quickly to avoid and reduce the likelihood of rust forming on exposed metal components (We suggest to installing a ball valve to assist with draining the water out) Water simply won't work well with these hard materials.Īlways drain your saw at the end of the day. We do it ourselves but NOT for hard agates and jaspers. Running water or water based coolants on any of our slab saws will void the warranty, but however we do realize that for some materials, running water or water-based coolants is essential for avoiding discoloration. ![]()
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![]() The structure is determinate and it holds the weight in place.Įven if we replace the pin joints by a small plate (known as gusset plate) with two or three pins in these, the analysis remains pretty much the same because the pins are so close together that they hardly create any moment about the joints. Thus we see that the weight is held with these three rods. ![]() Balance of forces in the vertical direction gives ![]() Since the direction of F 13 is coming out to be negative, the direction should be opposite to that assumed. It is in equilibrium under forces F 23, normal reaction N and a horizontal force F 13. Thus forces acting on pin 2 look like shown in figure 4.Īpplying equilibrium condition to pin (2) gives Further, it is pulled down by the weight W. The only forces acting on pin 2 are F 12 due to rod (12) and F 23 due to rod (23). If the actual forces are tensile, the answer will come out to be negative. Notice that we have taken all the forces to be compressive. Thus rods (12), (23) and (13) experience forces as shown in figure 3. Thus each rod is under a tensile or compressive force. As I discussed in the previous lecture, in this situation the forces have to be collinear and therefore along the rods only. The first thing we note that each rod in equilibrium under the influence of two forces applied by the pins at their ends. To get the forces I look at all the forces on each pin and find conditions under which the pins are in equilibrium. For simplicity I take the lengths of all rods to be equal. Let us now analyze forces in the structure that just formed. Generally, in a truss each joint must be connected to at least three rods or two rods and one external support. However these two forces cannot be collinear so without the rod (13) the system will not be in equilibrium. Rod (13) has two forces acting on it: one vertical force due to the wheel and the other at end 2. It is because point 3 will otherwise keep moving to the right making the whole structure unstable. Note: One may ask at this point as to why as we need the horizontal rod (13). The triangle made by rods forms the basis of a plane truss. This is the bare minimum that we require to hold the weight is place. To counter this, we attach a wheel on point 3 and put it on the ground. However, despite all this the entire structure still has a tendency to turn to turn clockwise because there is a torque on it due to W. All the joints in this structure are pin joints. Since rod (12) tends to turn clockwise, we stop the rightward movement of point 2 by connecting a rod (23) on it and then stop point 3 from moving to the right by connecting it to point 1 by another rod (13). The question is if we want to hold the weight at that point, what other minimum supports should we provide? For rods we are to make only pin joints (We assume everything is in this plane and the structures does not topple side ways). Now I put a pin (pin2) at point 2 at the upper end and hang a weight W on it. To motivate the structure of a plane truss, let me take a slender rod (12) between points 1 and 2 and attach it to a fixed pin joint at 1 (see figure 2). In this course, we will be concentrating on plane trusses in which the basis elements are stuck together in a plane. ![]() Thus there are two categories of trusses - Plane trusses like on the sides of a bridge and space trusses like the TV towers. On the other hand, a microwave or mobile phone tower is a three-dimensional structure. The structure shown in figure 1 is essentially a two-dimensional structure. Schematic diagram of a structure on the side of a bridge is drawn in figure 1. The examples of these are the sides of the bridges or tall TV towers or towers that carry electricity wires. We know the basics of equilibrium of bodies we will now discuss the trusses that are used in making stable load-bearing structures. Analysis of trusses by the methods of joints and by the methods of section is explained in the article. □ Reading time: 1 minuteLearn truss analysis methods with examples. ![]() ![]() ![]() Except to the extent required by applicable third party licenses, you may not copy (except for backup purposes), modify, adapt, redistribute, decompile, reverse engineer, disassemble, or create derivative works of the SDK or any part of the SDK.ģ.5 Use, reproduction and distribution of components of the SDK licensed under an open source software license are governed solely by the terms of that open source software license and not the License Agreement.ģ.6 You agree that the form and nature of the SDK that Google provides may change without prior notice to you and that future versions of the SDK may be incompatible with applications developed on previous versions of the SDK. 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You may not use the SDK if you do not accept the License Agreement.Ģ.2 By clicking to accept and/or using this SDK, you hereby agree to the terms of the License Agreement.Ģ.3 You may not use the SDK and may not accept the License Agreement if you are a person barred from receiving the SDK under the laws of the United States or other countries, including the country in which you are resident or from which you use the SDK.Ģ.4 If you are agreeing to be bound by the License Agreement on behalf of your employer or other entity, you represent and warrant that you have full legal authority to bind your employer or such entity to the License Agreement. ![]() The License Agreement forms a legally binding contract between you and Google in relation to your use of the SDK.ġ.2 "Android" means the Android software stack for devices, as made available under the Android Open Source Project, which is located at the following URL:, as updated from time to time.ġ.3 A "compatible implementation" means any Android device that (i) complies with the Android Compatibility Definition document, which can be found at the Android compatibility website () and which may be updated from time to time and (ii) successfully passes the Android Compatibility Test Suite (CTS).ġ.4 "Google" means Google LLC, organized under the laws of the State of Delaware, USA, and operating under the laws of the USA with principal place of business at 1600 Amphitheatre Parkway, Mountain View, CA 94043, USA.Ģ.1 In order to use the SDK, you must first agree to the License Agreement. ![]() This is the Android Software Development Kit License Agreementġ.1 The Android Software Development Kit (referred to in the License Agreement as the "SDK" and specifically including the Android system files, packaged APIs, and Google APIs add-ons) is licensed to you subject to the terms of the License Agreement. ![]() ![]() ![]() And it wasn’t until the the 17th century that the balance of power in Central Europe began to shift from the Ottomans toward the Habsburgs and their allies, and particularly, the Polish-Lithuanian Commonwealth.ĭespite peace being signed in 1621, the borderland area between the Ottoman Empire and the Polish-Lithuanian Commonwealth had remained in a state of semi-permanent warfare throughout the 17th century. ![]() Seen by many Hungarians as the decisive downward turning point in their country’s history, Suleiman the Magnificent’s victory at the Battle of Mohács and the subsequent Turkish conquest of Buda in 1541 spelled the end of Hungary as a unified independent kingdom and led to the partition of the country between the Ottoman Empire, the Habsburg Monarchy and the Principality of Transylvania.ĭuring this so-called “age of trisection”, constant warfare between the Ottomans and the Habsburgs turned Hungary into a perpetual battlefield which devastated much of the land. He led his forces at the Battle of Mohács against the Ottoman army, more modern and built around artillery and its elite musket-armed Janissaries, where nearly the entire Hungarian Royal army was destroyed. ![]() Twenty-year-old Hungarian King Louis II eventually assembled an army, mostly reliant on old fashioned heavily armoured knights. ![]() So when Suleiman the Magnificent launched an invasion in 1526, the Ottomans met no resistance from the Hungarians and advanced almost unopposed towards Buda. In 1521, the Ottomans advanced up the Danube River, taking Nándorfehérvár (present-day Belgrade) and Szabács, leaving most of Hungary indefensible and open to further Turkish conquests. The medieval kingdom‘s defenses sagged as border-guards and castle garrisons went unpaid and fortresses fell into disrepair. Since the end of the 15th century, the Kingdom of Hungary had begun to experience severe financial difficulties as magnates dismantled the national administration systems and bureaucracy throughout the country. And by 1520, after Selim I had dramatically expanded the Empire’s eastern and southern frontiers by defeating the Shah of Safavid Iran, his son, Suleiman the Magnificent, began a series of new military conquests directed towards Hungary. Throughout the 15th and 16th centuries, the Ottoman Empire continued to prosper under the rule of a line of committed and effective Sultans. But the crusading Catholic armies of Hungary and Poland, led by King Władysław III of Poland, were repelled in 1444 at the Battle of Varna, widely regarded as the last major effort by the Christian powers to expel the Turks from Europe.Īfter the Battle of Varna, the Ottomans extended their control over the Greek rulers in the Peloponnese and, with now no threat from the west, the son of Murad II, Mehmed the Conqueror, proceeded to conquer Constantinople, which fell in 1453. Sultan Murad II began his reign by laying siege to the Byzantine capital in 1422, forcing the Emperor John VIII to cede away all the territory outside the city walls, before launching a series of campaigns to reassert the Ottomans’ control over the Balkans.įearing the rise of an expanding and powerful Islamic empire on the doorstep of Europe, Pope Eugene IV called for a new crusade. The rise of the Ottoman EmpireĪs the Turks expanded into Southern and Central Europe, the conquest of Constantinople became a crucial objective. They eventually established a foothold in the Balkans, even moving their capital to Adrianople, which they renamed Edirne. On September 11, 1683, the combined forces of the Holy Roman Empire and the Polish–Lithuanian Commonwealth led by John Sobieski defeated the Ottoman forces at the Battle of Vienna, shaking Ottoman hegemony in Central Europe and setting the stage for the reconquest of Hungary and the Balkans.īy the start of the 15th century, the Ottoman Turks, once just one of many Turkic tribes wandering the Anatolian steppe, had expanded steadily westward, mostly at the expense of the decaying Byzantine Empire. ![]() |