US1769486A - Cattle guard - Google Patents

Description

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CATTLE GUARD July l', 1930,.v

Fiied May 1929 Trap/VEP' f Patented at 1.19a- 1,769,486

'y UNI. S PATENT FIiECEY OLOF 12303K, OF TAF'I,y BRITISH COLUMBIA, CANADA CATTLE GUARD yApplication led May 31, 1929. Serial No. 367,331.

This invention relates to improvements in shafts and separated by the collars 9, orthe cattle guards of that type adapted to be placed spur wheels may be of the type shown in Fig. betweenv and alongside the yrails of a railway 4 comprising a plurality of spurs 10, 11, 12, 13 ack adjacent the railway crossings to preand 14 loose upon the hub 15 that terminates vent or deter cattle from walking along the in the flanges 16, 17 that cooperate to secure 55 railway right of way. @ne object is to prosaid yspurs together. The several spurs are vide a guard that is positive in use, that is formedeach witha perforation 19, the several durable and that is so constructed that broken perforations of the several spurs Abeing or worn parts may be readily replaced when aligned to permit passage of the locking pin lo necessary. 18 that extends through all of said spurs to 6o Vith the foregoing andV other objects in keep them in operative position. In the event view the invention consists in the combination that one spur becomes'broken the pin 18 may and arrangement of parts to be hereinafter be removed and a new spur insertedin place fully described, pointed out in the claim and of the broken one and the pin then replaced.

l5 illustrated in the accompanying drawing The stringere 1, 2 are spaced apart'at right 65 which forms a partof this application for angles to the railway rails 20,21 adjacent the patent and in whichrailway crossing and should the animals at- Fig. 1 is a fragment-ary plan view of a railtempt to walk down the tracks from the crossway right of way illustrating the application ing they step upon the spur wheels which of the cattle guard. n make their walking so difficult, laborious and 'io Fig. 2 is a cross sectional view through Fig. uncomfortable that they leave the track. 1 enlarged. What is claimed is Fig. 3 is a vertical sectional view through Y VIn a cattle guard, a framework, shafts one of the spur wheels and frame. carried thereby, spur wheels arranged upon Fig. 4 is a central sectional view through each of said shafts, each spur wheel compris- 'L5 amodiiied form of spur wheel. ing a hub formed with flanged terminals, Fig. 5 is a view of one of the spurs. spurs loose upon said hub, each spur being Like reference characters denote lcorreformed witha perforation, and a locking pin sponding parts throughout the several views.v connecting the apertured portions of the :lo The cattle guard comprises a plurality of spurs of said hub. se

parallel shafts supported by parallel string In testimony that I claim the foregoing as ers, each shaft being provided with a plumy own Iliave hereto affixed my signature. rality of spur wheels, the spur whe-els of one OLOF BJORK. shaft being staggered with relation to those of the nextA shaft, the spurs of each spurY wheel 85 being either of the integral type or loose spurs mounted upon a hub, the ends of which are flanged to hold the spurs in place.

The reference numerals 1, 2 denote the 40 stringere each of which is provided with a n 90 metal strip 3 secured thereto by fasteners 4, said strips comprising a plurality of bearings r5 in which are disposed the ends of the ypar-l allel shafts 6 that connect the said stringere.

4:5 Loose upon each shaftare a pluralitv of spur t Y 95 wheels 7, the spur wheels of one shaft being staggered with relation to those of the neXt shaft. The 'spur wheels may be of the type shown in Fig. 3 in which the spurs 8V are intev gral, the several wheels being loose upon their 100

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