US846062A - Switch-stand. - Google Patents

Description

No. 846,062. PATENTE D MAR. 5, 1907. P. W. SNOW.

SWITCH STAND.

APPLICATION FILED NOV. 10,1906.

2 SHEETS-SHEET l.

PATENTED MAR. 5, 1907.

F. W. SNOW.

SWITCH STAND. APPLIOATXON FILED NOV. 10, 1906.

Z SHEETS-SHEET 2 @QMQ/M 53 110031 loz UNITED STATEfd PATENT OFFICE FRED WILLIAM SNOW, OF HILLBURN, NEW YORK, ASSIGNOR TO STANDARD EQUIPMENT COMPANY, OF MAHWAII, NEW JERSEY, A CORPORATION OF NEW JERSEY.

.Speeification of Letters ZPa'tent.

Application filed November 10,1906. Serial No. 34Z 809x To all whom it may concern:

Be it known that I, FRED WiLrmM Snow, a citizen of the United States, and a resident of Hillburn, in the county of ltockland, in the State of New York, have invented certain new and useful Improvements in Switch- Stands, of which the following is a specilico tion, reference being had to the accompanying drawings, forming a part hereof. I

in automatic switch-stands, which are designed to be operated from the switch itself by the passage of a train therethrough, it is desirable that the friction between the parts be reduced to a minimum, so as to prevent sticking, which might result in the partial operation of the stand and the leaving of the switch in an intermediate position, and as Well to prevent excessive wear upon the parts. At the same time the mechanism must be such as to hold the switch firmly in either of its limiting positions and to prv vent any disturbance of the switch in either of these positions except through excessive force, such as that produced by the flange of a car-wheel passing between a rail and the switch-tongue adjacent thereto. both of these considerations due weight in the production of switch-stands has been no easy task; and it is the object of this invontion to provide a structure in which both of these considerations find embodiment.

' of the shaft b-may be made square to receive a square sleeve 0, around which a collar d fits, so as to have vertical motion with respect to the sleeve. A handle 6 may be provided to .turn the shaft 1), and thereby turn the switch,

the connections between theswitch and the shaftb being preferably such as will move the switch from one of its limiting positions to To gi ve I proper, Which is not illustrated. The'uppcr portion the other of its limiting positions by turning the shaft 1) through a quarter of a revolution. in this way the yardman may operate the switch at pleasure. l\ormally, however, the switch is held firmly in one or its limiting positions by means of mechanism presently to be described, the collar (15 being squared on its lower end to engage a correspondinglysquared portion of said mechanism, and therefore before the shaft 1) can be turned by the yardman the collar a must be raised from ei'igagcmcnt with said mechanism. The handle (2, which may be bifurcated and secured to the sleeve 0 by means of a boltj, is provided for this purpose with depending links it, which are secured to the collar d and serve to withdraw the same from its engage ment with the other mechamsm referred to upon the rafsing of said lever e. 'l he latter is normally hold fastened down by means of any suitable device, such a projection i, through. which a suitable padlock may be passed. in this position the squared portion of the collar 11 engages a -orrospimdinglyrecessed port.on ol a block proi'ided upon the lower end of the shalt b and being rotatable in the frame a of the switch-stand. This block li' constitutes a part of the mech- {LDLSJH for normally holding the rotatable shaft 0, and therefore the snitclnin astationary position that is, in one of its limiting positions-- and for pcrnntting the same to be moved automatically by the application of excessive force upon the snitch or switchtongue. This mechanism includes a suitable member or hearing it, adapted to press against the block It to hold the same stationcry and yet to permit the same to be moved with a minimum of friction. 'lhis rotatable member or hearing preferably journaled in a bar 1, which is movably mounted in the frame a of the stand and with which springs or, also mounted in said frame, cooperate to hold the bearing u firmly against the block 7c. In order to hold the block k stationary, said block is provided with a recess 12, in which the rotatable bearing engages when the block is in such a position as to bring the switch or switcl'i-tongue into one of its limiting positions. There are preferably four of such recesses,which are separated by projections to,

.substantially ninety degrees apart, and the recesses are conformed substantially to the niechsnis n is arc Of a circle in. order to fit Well upon the bearing n, which is preferably circulsr.

In operation the SWitch-stsnd is located beside the switch in the usual manner, and, as was pointed out hcreinbefore, the ynri'lninn may operate the some at will by raising the handle 0 to disengage the collar (1, from the block it i'l'hen, hmrover, the handle c is locked by means of its engagement ith the projection i, the sh lf i) cnnonly be rotated with the block s will be ell'ccteii when sn'llicient force nnpcrtod to the switchtongue, as by :1. train pa 3 in the right :tion, so that the l'lsngos upon the car-r will pass bet/Worm the switch-tongue and its m'ljsccnt mil. fore the 1 passes orerthe switch in its norma position. (l ndc cateol g. i l l hen cssivo force is impartc th h-tcngno and from the switclvtongue througn the shalt to the blocls' it", the shaft :mdjfloclr will be rotated, one of the projections w upon the block noting upon the rotatable hearing it in such it way (L3 to turn said bearing and at the sonic tnne'to move the bar 0 sway frmn the shitlt, the inn 0 yielding throngh its springs-n.

It will be clear that the hearing u, em braced as it always is in its normal position by two of the projections w, will hold the block is, and tl'ierelfore the shaft 5, together with the switcln vcry 'lirinly in their proper positions and will prevent the some from be:- ing turned, moved, rotated, or otherwise disturbed, except through the application of excessive force, and it will also be clenr that "when such force is applied to operate the stand automatically the parts will move upon each other wi thon exce sive friction and the disadvantageous consequences which result therefrom.

Modifications in the construction and operation of the parts now be made without departing from the spirit of'thc invention,

1 which is therefore not limitcd to the meclninism shown and described herein for realizing the some.

I claim as my inrention 1. In it switch-stand, the combination oi it rotatable. shaft, it her yielding at both ends and acting against the shalt, and rotntnblc moans npon the bar operating between the bar and shalt and adopted to hold the shaft stationery.

2. in n switch-stand, the combination of it rotatable shalt, at bar \;'icldingl hold at each end and acting against the shaft, and s, rotstoble member on the bar operating betwcon the bar and shaft.

3. In it switch-stand, the combination of n rotatable shaft, :1 bar-spring nctuntcd at each end and acting against the shaft, and a rotatable member on-thc bar operating between the bar and shaft.

ng over the switch rotatable shaft, :1 block at. in s switch-stand, the combination of s rotatable sho l't, a bar yielding at each end, rotatable member, and "means on the to embrace said member.

5.111 n switclcstnnd, the combination of s rotntsble sl'iel't, n yielding bar having s pro jecting curved rotating; member centre-l thereon and embraced by the strait.

o. in n snitch-stand, the combination of n .hle shaft, n yielding bar having pro-- iccung, curved rotating member, s spring each evil. of the bar to press the men against re shift, and means on the shalt to znnbrijtcc mi 4 WlHlJOF.

7. ll. i sin shin rot-cubic shaft, :4. bin f'ylLi-h.

:ibic onnnbci the uh the r o. in c c? and, the combination. c rotatable shalt, ov our yielding at both and n roller ournslcd centrally upon tue "or and adopted to hold the shalt stationary or v to reduce liiction when the shnlt moves.

9. in sswitch-stimd, the corn binntion of n rota-table shaft, each end, a roller journnlcd the bar and yieldingly held against the shaft by the springs and adopted to hold "tho shaft stationary and to reduce friction when the shalt moves.

centrnlly' upon 10. in n switclnstsnd, the combination c a rotatable shalt, a bar, at roller central up n. the bar, and spring at each end of the hon. to press the roller against the shaft.

11. In a switch-stand, the combination of rotatable shaft, 9. block thereon having recess, a. bar "yielding at both ends, and roller central upon the bin adopted to engngc in the recess to hold the shaft stationary to reduce the friction when the shaft rot 12. In a SWllLGlkSifiiHil, the combination or's. rotatable shaft, at block thereon braving four recesses, bar yielding at both ends, it roller central upon the bar and adopted to ogs. the recesses one at 2 time to hold t stationary and to reduce friction wshnit rotates.

3. in a. switclrstnnd, the combination. oi rotatable shaft, a block thereon having it recess, and bur, roller upon the our sud moons iti each end of the bar to hols the roller yieldin'gly against the block.

14. in it switch-stand, the combination of thereon having recess, a bar, a roller central upon the bar, and a spring at each end of the bin to press the roller zignii'ist the block.

15. In a. switclnstnnd, the combinstion means for opcrntivcly. connecting the with the switch, a block thereon adopted to rotate in the stone, means to lock tne first? named means and block together, a. ti? yielding at both ends, and it rotatable ment ber upon the bar and adapted to hold the block stationary and to reduce friction when the block moves.

16. In a switch-stand, the combination of means for operatively connecting the stand with the switch, a block thereon having a recess and rotatable in the stand, means to lock the first-named means and block togethcr, a bar having a spring at each end, a

roller central upon the bar, said roller normally resting in the recess to hold the block stationary.

17. In a switch-stand, the combination of a bar-spring actuated at both ends, operative connections for a switch, a rotatable mem- I 5 by and through said means and operative 20 connections or automatically through said operative connections and rotatable member.

This specification signed and witnessed this 23d day ofOctober, Av D. 1906.

FRED WILLIAM SNOW.

In presence of ALFRED W. KIDDLE,

LUoIUs E. VARNEY.

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