US460890A - Vehicle-brake - Google Patents

Description

(No Model.)

J. T. SOHUETZ & G. SOHUETZ, Jr. VEHICLE BRAKE.

Patented Oct. 6, 1891.

U ITED STATES PATENT ()FFICE.

JOHN T.SCHUETZ AND GEORGE SOHUETZ, JR, OF BELLEVILLE, ILLINOIS.

VEHICLE-BRAKE.

SPECIFICATION forming part of Letters Patent No. 460,890, dated October 6, 1891.

Application filed April 28, 1891- Serial No. 390,732. (No model.)

To all whom it may concern.-

Be it known that we, JOHN T. SCHUETZ and GEORGE SCHUETZ, Jr., both of Belleville, in the county of St. Clair and State of Illinois, have invented a certain new and useful Improvement in Vehicle-Brakes, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

This invention relates to an adjustable brake with a rack-and-pawl set-lever that locks the adjustment respectively to an automatic brake on the one hand and a handbrake on the other; and the invention consists in features of novelty hereinafter fully described, and pointed out. in the claims.

Figure I is a top view, and shows the slidin g draft-bolt and brake in their intermediate position, in which the brake-shoe is brought automatically in contact with the wheels when the vehicle is running on a steep downgrade and requires locking. Fig. II is a side View, and shows the brakeadjusted to the same intermediate automatic position. Fig. III is an enlarged detail perspective of the brake-lever. Fig. 1V is a detail perspective view of the vehicle-tongue and tongue hounds and shoes, the slotway through tongue and hounds in which the sliding draft-bolt is adjusted; and Fig. V shows a modification in which a sliding tongue is automatically adjustable in the hounds to the limit of the play of the draftbolt in the slotway of the tongue, with part of one of the hounds broken away to show said slotway in the tongue.

Referring to the drawings, 1 represents the front axle; 2, the wheels mounted on said axle; 3, the main hounds; i, the tongue, and 5 the tongue-hounds.

6 represents the draft-bolt that secures the tongue and tongue hounds to the main hounds, and which draft-bolt is seated in the draft-holes 7 in the main hounds and in the straps that bind said hounds, and said bolt has an intermediate sliding seat in the elongated slots 8, through the tongue and its hounds.

9 represents the brake-bar, which has a sliding carriage within the loop-strap frames 10, which loop -frames, with their attachmentstraps, are secured beneath the hounds and axle by the screw- bolts 1,1.

12 represents the rubber shoes that are secured to the brake-bar, and 13 are the duplex brake-rods, which are secured to the brakebars by the screw-nuts ll. The perforate forward ends 15 of said'duplex rods are coupled to the perforate end 16 of the pendent fulcrum-bar 17 by the pivot-bolt 18. The said pendent fulcrum-bar is secured by the folcrum-bolt 19 to the perforate lugs 20, in which and in said pendent bar said fulcrum-bolt is seated, and said lugs are firmly secured by their bolts 21 to the front bolster 22 of the vehicle (through which bolster said bolts pass) by the screw-nuts 23, which engage on the screw-tips of said bolts.

24E represents a segment rack, which is bolted to near the rear end of the tongue just forward of the horizontal draft-bolt 6, that secures said tongue to the hounds.

25 represents the adj usting1ock-lever,whioh is pivotally secured to the side of the segment-rack by the pivot-bolt 26. A drop-dog 27 is seated and works with keepers 28, that are secured to and project from the side of the lever 25, and 29 is a push-spring, which is mounted on and secured to said drop-dog.

30 represents a trigger that is secured to and works on said lever by the pivot-pin 31, adjacent to the handle 32 of the lever. A double hook-link 33 hooks above into the perforate lug 34E of said trigger and below into the eyelet-head 35 of said drop-dog. Thus when the trigger is pressed so as to come about in line with the handle of the lever, the dog is elevated out from between the teeth or cogs in the segment-rack to allow the movement of the lever on its pivot-bolt.

36 represents a strap-hanger, which is secured to the reverse side of the lever than thatnext the rack to which it is riveted. The said strap is secured at top to said lever by the rivet or bolt 37. Beneath the bolt 37 the said strap is bent out for a short distance at nearly a right angle 38 from the side of the lever, and then is bent downward again on aparallel line with said lever until at near its lower end it is connected with said lever and beyond it with the segment-rack by the aforebar.

said pivot-bolt 26 onwhich the lever works A thick filling-washer 89 is mounted on said pivot-bolt and keeps said hanger-strap at its lower end at a parallel distance from the lever.

40 represents a draw-bar whose perforate forward end is seated within said hangerstrap and thelever and is pivotally secured to both by the bolt 41. The perforate rear end of said draw-bar is mounted on the round pin-head 42 of the aforesaid fulcrum-bar 17 and rests on the shoulder-collar43 of said said pin-head and secures said draw-bar in its connection with the fulcrum-bar 17.

It will beseen that when the adjusting locklever 25 is placed in its. vertical position (shown in Figs. I and II). the horizontal draftbjolt that connects the tongueand tong-nehounds to the mainhounds, isadjusted in its.

sliding slot-bed in the tongue-hounds and tongue to its intermediate position. (Shown in broken lines in Fig. I.) At the same time by the action oi the draw-bar on the head of thefulcrum-bar the duplex brake-rods and the brake-bar and its rubber shoes are drawn or driven, as the case may be, in accordance with the previous respective forward or rear tilt of the lever into their intermediate position,,and the drop-dog 27., fallinginto engagement between the center teeth or cogs of the Segment-rack, holds said parts: in said position, in which, when the vehicle is on either a. levelgor upward incline, the rnbbershoes remain at a short distance from. the tires of the wheels; but when the vehicle is running on a downgrade and the load pusheson the team the said tongue slides back on its. draft-bolt, (the aforesaid elongated slots in the tongue tongue-hounds enabling it to do so-,)-while simultaneously and consequently the action of. the draw-bar 40 is also automatically reversed, and pushes the top of the fulcrum-bar back, and in consequence throws. the bottom ofi'said bar forward, which action, by means of the duplex brake-rods 13, automatically draws the brake-bar forward and presses its rubber shoes against the wheels. iVhen the vehicle again is running on the level or as.- cending an upgrade the action is reversed, the tongue draws forward on its draft-bolt, the draw-bar 40 again draws the upper end of the fulcrum-lever forward, which throws its lower end backand through its above-described connections, throws back and thus antomatically releases the brake fro m the wheels. Thus. it will be seen that when the lever is locked in its vertical position to the center of segment-rack the action of the brake is entirely; self-adjusting, asit always automatically sets thebrake to rub or brake the-wheels when the vehicle is. running on a sufliciently downgrade for it to run. forward and press against the team, and, on the contrary, when said vehicle runs on. sufliciently near a level A nut 44 engages on the screw tip of for thedraft from the team to be again exerted in. drawing the load the movement of the above-descriloed automatic device immediately releases the brake, so as not to add to the draft of the load. It will also be seen that the steeper the downgrade on which the vehicle is running, and consequently the more severe the push on the team, the tighter (in self-adjusting consequence) do the brakeshoes press against the wheels.

WVhen it is required to permanently release the brake the lever is pressed down forward and its drop-dog made to engage in one of the forward intervening apertures between the teeth or cogs of the segment rack, in which position the draw-bar 40 works the fulcrum-lever to throw back the brake to its most open position- When, on the other hand, it. is required to. permanently or for a. time toenf'o-rce the brake, such as. on the. long continued descen-ts of mountain sides and to effect a stringent continuous lock the said adjusting lock-lever is then thrown back to its extreme rear tilt and its locking dog dropped into one of the intervening spaces between the rear teeth, in which position it forces the fulcrum-bar to draw and hold the brake-bar to effectively lock the brake.

In FigV is shown a modification, in which the tongue has no hounds framed to it. Therefore said tongue connects direct with the main hounds, in which case the main hounds are firmly secured together by the heavy strapbands 45, that are secured by bolts 46 to said hounds. The-tongue-itself in this modification is provided with a similar elongated slot 8 to that shown in Fig. IV, and the tongue slides within said straps and between said hounds: to the limit that its draft-bolt. that works in said slot. will allow.

VlTe claim as our invent-ion-- 1. In a vehicle-brake, the combination of the brake-bar 9, the brake-shoes 12, the loopstrap frame 10, in which said brake-bar works, the duplex brakerods 13, the fulcrumbar 17, pi-votally secured to said brake-rods, the bolster 22" and its projecting perforate. lugs 20, to which said fulcrum baris journaled, the draw-bar 40, the adjusting brake-lever 25, coupled to said fulcrum-bar by said bar 40,'the segment-rack 24:, to which said lever is pivoted, the drop-dog 27, the push-spring mounted on said dog, the trigger 30, pivotally mounted on the brake-lever, and the double hook-link'that connects said trigger to said spring-dog, substantially as. and for the purpose set forth.

2. In a vehicle brake, the combination of the axle 1, the wheels- 2, mounted on said axle, the main hounds, the tongue and its hounds provided with the elongated slotsS, the draft-bolt 6, that secures said tongue and houndswithin said main hounds and allows. limited longitudinal play for the tongue and hounds within the main hounds, the

brake-bar 9, the rubber shoes 12 on said bar, said dog, substantially as and for the purpose the duplex brake-rods 13, the fulcrum-bar set forth.

17, the perforate lugs 20, in which said ful- JOHN T. SCHUETZ.

orum-bar is pivoted, the draw-bar 40, the ad- GEORGE SCHUETZ, J R. 5 justable brake-lever 25, the segment-rack 24, In presence ofto which said lever is pivoted, the spring-dog, HENRY C. SINK,

and the trigger and hook link that operate I. S. SCHAADT.

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