Патент USA US2411863код для вставки
Qec. 3, 1946. Q. BERG ' 2,411,863 TRAVEL LOCK Filed May 17, I945 FIG! 4 FE. INVENTOR Quantin B213 BY ‘ ATTORNEYS Patented Dec. 3, 1946 ‘ “- 2,411,863 2,411,863 7 TRAVEL LOCK Quentin Berg, Detroit, Mich. Application May 17, 1943, Serial No. 487,292 4 Claims. (01. 89-37) (Granted under the act of March 3, 1883, as amended April 30, 1928; 3'70 0.. G. 757) 1 2 The invention described herein may be manu factured and used by or for the Government for Figure 5 is a detail section showing the detent on the locking pin. Reference to these views will now be made by use of like characters which are employed to des governmental purposes, without the payment to me of any royalty thereon. The present invention pertains to a novel travel lock for a gun having a delicate elevating mecha nism which is subject to shocks and stresses such as those transmitted from a moving vehicle on ignate corresponding parts throughout. In Figure 1 the numeral l designates an over head support from which the gun elevating mech anism is suspended. The support may be sta tionary, rotary, mobile or both mobile and rotary which the gun is mounted. The invention is also useful with a stationary gun for protecting the 10 such as the turret of a tank or tank destroyer. ' elevating mechanism from various vibrations. In considering a gun in a tank as an example, it is obvious that road shocks will be transmitted to the accurately machined elevating mechanism A gun 2 is mounted on a trunnion 3 in the struc ture 4 beneath the support I in the usual manner. A mechanism for elevating the gun is shown and described in detail in, one of my copending appli unless some preventive means is provided. This 15 cations, serial No. 482,863, ?led April 13, 1943, now Patent No. 2,368,191, issued January 30, 1945. means ordinarily consists of a lock designed to fix This mechanism includes a suspended threaded the gun relatively to the tank. In order to pro shaft, and the suspension comprises a plate 5 fas tect the elevating mechanism, the lock must be constructed even more accurately than the mech tened to the support 1 and formed with a pair of anism, for otherwise it will permit movement of depending apertured ears 6. the gun relative to the tank resulting in move ment and wear in the delicate elevating mecha nism. The provision of a simple and easily oper ated lock meeting this requirement has not hith ‘1 is drilled transversely at its upper end as indi cated by the numeral 8 to receive a tightly ?tted bolt or pin 9 mounted in the ears 6. A resilient bushing Ill lines each of the ears and ?ts on the The suspended rod erto been successfully accomplished. The present invention attacks the problem from a different direction. An extremely simple or cushioned suspension for the rod ‘I. enclosed part of the pin 9 to provide a resilient ’ The shaft is threaded at l I a considerable dis tance upward from its lower end, and on the and rather coarse lock or latch for the gun is em ployed, merely for the purpose of holding the threads is mounted a travelling member shown mechanism against vibration relative to the tank 30 as a movable nut l2. The nut supports a housing in large amplitudes. The elevating mechanism l3 by appropriate means and the nut is rotated by a handle IE to move along the rod 1 and carry includes a vertical suspended shaft with a travel ing member thereon and means for transmitting the housing with it, as shown and described in the motion of the traveling member to the gun. the aforementioned copending application. The I have found that a resilient suspension for this 35 housing 13 is bolted at Ii to the gun cradle l5, whereby movement of the nut 52 and housing [3 shaft, in combination with the coarse latch, effec tively absorbs shocks transmitted through the alters the elevation of the gun. latch and thus protects the more delicate adjust As already indicated, the resilient suspension ing mechanism. The suspension is in the form of for the shaft obviates the necessity for a ?nely supported resilient bushings receiving a cross pin 40 machined latch or lock. In this case the latch is passed through the upper end of the shaft. A of a very simple and coarse construction as shown further advantage of the invention is that the in Figures 1, 3 and 4. To the underside of the sup bushings are inexpensive and can easily be re port I is secured, as by welding, a strip 20 having placed if they become worn or otherwise defec ears 2! and 22 formed at its ends. An H-shaped tive. 45 latch 23 is hinged on the ear 22 by a pin 24. The invention is fully disclosed by way of ex The other end of the member 23 is apertured at 25 ample in the following description and in the to register with an ear 26 formed on the cradle l 5. accompanying drawing in which: The gun is locked by passing a pin 21 through the Figure 1 is a detail elevation within a tank, alined holes. One end of the pin is formed with showing a portion of the gun in elevation; 50 a knob 28 and the other exposed end is ?tted with Figure 2 is a vertical section, partly in eleva a spring-pressed ball detent 29. The pin is thus tion, of the gun elevating mechanism; retained in locking position but can be withdrawn manually by a hard pull on the knob 28. As Figure 3 is a side elevation of the latch; Figure 4 is an elevation at right angles to Fig mentioned above, the latch is of coarse construc ure 3; 55 tion and the parts thereof are machined with 2,411,863 3 4 relatively large tolerances, resulting in case of manufacture. Due to the relatively loose ?ts be tween the parts of the latch, the pin 21 is easily support, said means also including a resilient element, whereby shocks transmitted through said coarse latch piece are effectively absorbed, inserted through the aligned holes in the member thus protecting said relatively delicate elevating 23 and the ear 26. mechanism. 2. In combination with a gun pivotally mount ed on a support subject ‘to vibrations and hav ing a relatively delicate mechanism‘for elevating said gun and a, connection between said mecha “nism and said support, a coarse latch piece con When the latch piece 23 is released from the ear 26, it is'swung upward so that its apertured free ends register with the ear 2|, and the pin 21 is inserted in the alined holes. In order that the pin shall not become lost, it may be chained at ‘30 to the support I. necting said gun to said support, said latch piece being constructed and arranged to prevent vi bration'of said gun in large amplitudes, yet to v‘permit vibration of said gun in limited ampli tudes, with respect to said support, the said The gun 2 is delicately balanced on trunnions 3 and, unless locked, would rock relativeto the vehicle in response to road shocks during travel of the carrying vehicle. The tendency of the gun to rock relative to its mounting onlthe \ve hicle would exert stresses on,~and in time-cause connection comprising a, resilient element be tween -said "elevating mechanism and said sup wear and injure, the delicately machined elevat ing mechanism. 7 port, WhEI‘GbY'ShOCkS transmitted through said Forthis reason a travel lock is used and, in order to protect the elevating mechanism from transmitted road' shock's, _must coarse latch piece are e?ectively absorbed, thus 20 protecting said relatively delicate .elevating “mechanism. vbe ‘even more accurately machined than the 3.7In. combination with. a gunpivotallymount ed on a support subject.to>~vibrations..and..hav mechanism. ' To provide such a lock thatis‘reas onably simple in construction and easily operated iingca relatively delicatemechanismlfor elevat is'a dif?cult problem that has not‘yet been sat 25 ing said gun and a connection wbetweenlsaid i'sfactorily . solved. The travel locks hitherto .mechanism. and. said support, a coarse latchpiece available have been unsuccessful in use, princi lpally because of the neglect of the‘ men to apply piece being constructed andarrangedtdpre-vent them before traveling, especially in combat. vibration of .said .gun .in . large amplitudes, ,yet connecting said gun tosaid support, saidv latch --'I-‘~he lock- describedherein, as already pointed 30 to permit vibration. of .said gun v.in limited‘ampli -out,~islof exceedingly simple and rather‘coarse construction, so that it does notrequire accurate al-inement ofrthe holes, in order to be engaged. The relatively large tolerances in the travel lock permitv a small relative movement between the ‘gun and the vehicle, butithis is effectively ab sorbed in'the resilient bushings Hi without in jury to the delicate parts of the elevating mecha tudes,.with respect to saidlsupport, fthewsaid connection comprising-a pair of .7 apertured ears .carried by -.said support, a rod "carried by said .mechanismland having a,hole .therethrough, a pin passing through the apertures vof said ears 35 .. and-through the hole in'said~rod>,rand resilient. »bushings=in said apertures and surrounding said .pin, whereby shocks ‘transmitted through 5-nism. 'On-the other hand, the bushings are suf said coarse latch piece - are 1 effectively. absorbed, ?ciently .st'i? to permit sensitive and accurate 110 thusprotecting said relatively delicate elevating elevation control withoutthe feeling of back mechanism. lash. 'lEven vWithout the latch in the locked-po In: combination with agun pivotally mount sition on the. gun,'the rotating nut '12 and‘the ed- on-a, support-subject to vibrationsandihav threads I tare cushioned-by the bushings against ing a relatively delicate» mechanism 1 for elevat shock. The bushings may-become worn or com pressed in time but they are-inexpensive and easily replaced on withdrawing the ping. 'Although aspeci?c ‘embodiment of the inven~ 'tion has been illustrated and described,’ it will be !understood that Various alterations in the de tails of construction may be made without de iparting from the scope of the invention as iridi cated‘ by the appended claims. What I claimiis: 1. In" combination with‘ a gun‘ pivotally' mount ed on a support subject'to vibrations, ‘means including a relatively delicateelevating 'mecha nism connecting said ‘gun to said support, .a ing said gun and a» connection between'?said naechanismand said support, .a coarse-latch, piece comprising ‘an . arm. vpivoted tov said support-and .removably a?ixed -to .said ' gun connecting ».~said .gun to 'said support, said latch-'piecewbeingzcon -structed andarranged-to prevent-vibratiomoi said . gun I in 1 large amplitudes, yetoto vpermit vvi -.bration.of said guninlimited .amplitudes,~with respect tozsaid- support, the said: connection. com .. prising a.pairnoflaperturedears carried by. said "support-a rod carriedbysaid mechanism-and having -a, .hole therethrough, a _.pin . passing through-. the, apertures of said- ears . andthrough \ the lhole. .in.-.saidlrod,,_~and . resilient bushings .v in coarse latch piecealso connecting said'gun‘to said. aperturesand. surrounding said,.pin,~ .where said support, said latch piece being constructed .60, by shocks transmitted .through said .coarselatch and arranged to preventvibration‘o-I” said gun in large'amplitudes, yet to permit vibration of. said gun in. limited amplitudes, with 'respect‘to said , piece are- ‘effectively absorbed, . thus. protecting said relatively Ldélicate elevating :mecham‘sm. -QUENTIN :. BERG.