US1546305A - Rebound check - Google Patents

Description

July 14, 1925.

R. T. NEWTON REBOUND CHECK Filed Nov. 15 1922 3 Sheets-Sheet 1 M R0 m m? BYk/w Jul 14, 1925.

R. T. NEWTON REBOUND CHECK Filed Nov. l5. 1922 3 Sheets-Sheet 2 B y Elm-man KNEW rm A TTORNE Y6 Jul 14, 1925.

1,546,305 R. T. NEWTON REBOUND CHECK 1922 5 Sheets-Sheet 3 Filed Nov. l5

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v INVENTOR BY H/EHHRDTNEWT N A TTOXNE Y w Fatcnted July 14, 1925.

RICHARD T. NEWTON, OF NEW YORK, N. Y. l

REBOUND annex.

Application filed November 13, 1922. Serial No. 600,649.

To all whom it may concern:

Be it known that I, RICHARD T. NEWTON,

' a citizen of the United States of America,

residing at New York city, borough of Manhattan, in the county of New York and State of New York, have invented certain new and useful Improvements in Rebound Checks, of which the following is a specification.

My invention relates to rebound checks, and particularly to a device of this type for use on an automobile, or other vehicle having a body spring supported from the running gear. The object of my invention is to provide a device which is simple to manufacture, efficient in operation, and affords Fig. is a vertical section through the device in assembled posltion and under stress;

'Fig. 6 is an inverted plan, viewed from the direction. indicated at 6-6, Fig. 5;

Fig. 7 is a section similar to Fig. 5, but showing the parts in release position;

Fig. 8 is a face view of the frame;

Fig. '9 is a side elevation thereof;

Fig. 10 is a broken section through a modiiied construction; and

Fig. 11 is a section on the line 1111, Fig."10.

' he present rebound check device may be adapted to various types of vehicles, and

' sam yp to various constructions in vehicles of the I have shown it in the accompanying drawings adapted particularly for use on automobiles. Its mounting on the latter may be variously modified, but I have illustrated, for example, a carrying bracket 15 adapted to be secured to a chassis side bar 16 in any suitable way, as by means of a bolt 17 passing therethrough, and a supporting log or hook 18 overlying the upper flange of the side bar to assist in rigidly securing the bracket thereto. The frame 19 of the device may be in the form of a disc appropriately tapped to receive screw b olts 20, by which it is secured to the bracket 15. On the frame is a fixed stud 21, surrounded by an anti-friction bearin bush 22.

Iounted eccentrically on the stud by the bearing 23, is what may for convenience be termed a friction drum 24, the oscillation of which on the stud is limited by a stop pin on the frame 19. which engages in a slot 26 in the side web 27 of the drum. The web 27 carries a spring anchor pin 28 .to which is secured one end of the spiral return spring 29. To the opposite and free end of the return spring is secured one end of the friction band 30, which passes through the interrupted area 31 of the drum and around the periphery of the latter, being carried down therefrom to any suitable attaching means by which the other end of the friction band is secured to the running gear. In the present example I have shown this end of the band attached to a clamp 32 mounted beneath and secured to the wheel axle 33 by a clamping bolt 34.

Also mounted on the stud 21 is a friction shoe 35, here shown integral with the side flange 36, which terminates in a pair of bearing lugs 37 straddling the bearing 23 of the friction drum on the stud 21. The side flange 36 of the shoe is laterally oiiset from the bearing lugs 37 to clear the side margin of the drum, and the parts are so proportioned that in assembled position the shoe partially surrounds the drum and is circumferentially spaced from the latter a sufiicient distance to accommodate between them the friction band 30. At the free end of the shoe are provided abutment lugs 38 pierced to receive the pin 39 by which the, anchorbolt 40 is secured thereto. The latter passes through the eye 41 in the offset stop lug 42 of the frame 19, and has screwed",

thereon a thrust nut 43, between which and the stop lug 42. is interposed a pressure spring 44. The nut 43 may be provided with a graduated scale 45 (see Fig.- 6) with which cooperates the pointer 46 securedto the stop lug 41 on the frame 19; The position of the nut with"respect"totthe pointer may be thus used to indicate the degree of. stress placed upon thespring 44, the effort 1 of which may thus be regulated to 'vary the frictional grip on the band 30 in accordance with the weight of the chassis and its associated car body elements.

The drum is conse uentl biased away from the shoe 35, but is alte by the stop pin which enga es at one end of the slot 26 in the web 0 the drum. The shoe 35 is stressed in the same direction by its spring 44, but is prevented from following the drum by the impingement of its stop lugs against the stop lug 42 of the frame. The iin'ction band 30 is thus free to play in the circumferential space afforded between the exterior of tlmdrum and the adjacent inner face of the shoe On the upward throw of the chassis 16 with respect to the running gear or axle33, however, the band 30 is pulled downward at its running gear end, while its opposite end is held in contact with the drum by the stress of the spring 29. The drag thus exerted upon the drum overcomes the pull of the spring 29 and tends to swing the drum bodily in the direction of the arrow Y (Fig. on the bearing stud 21. This rocks the drum towards the shoe and engages the friction strap between the opposed surfaces of the shoe and drum with a friction grip dependent upon the rtess of the pressure spring 44. The upward throw of the chassis is thus checked.

It is obvious that the length of the slot 26 in which the stop 25 plays may be varied. I have indicated it as rather short in order to prevent the throw of the drum against the shoe to an extent which might cause the latter to swing outward a sufficient distance to rupture the housing 47 which is mounted upon the frame 19. This casing encloses the parts except for apertures 48 to permit the play of the stop lu'g 42, pressure spring 44; and the associated parts of the shoe. The housing may be shaped if desired to wholly enclose the latter savefor the opening 48 through.

. gaging between them the friction band 30.

he shoe 35 forms a yielding abutment, the

resistance of which is determined by the spring 44, while the drum 24 is forced out a ainst this yielding abutment by thedrag o the friction band and the eccentric mounting of the drum. A quick grip upon the friction band is secured by the construction, while at the same time the checking effect the band, and 49 to accommodate is not objectionably sudden, since the shoe is yieldably restrained and imposes its gripping efi'ort progressively on the strap.

The device is simple to manufacture, assemble and install; it is not readily put out of order, and is eflicient in operation.

In Figs. 10 and 11 I have shown a modified construction, in which the shoe 50 is rigid with the base and only the drum swings. In order to force the drum away from the shoe after the checking action is completed, I provide a spring 51 housed in a boss 52 rigid with the frame and acting on the drum through a plunger 53 and strut 54. In order to take up wear, the strut may have associated with it a pawl 55 rigid with the strut axis 56 and pressed by the leaf spring 57 against the'inner face of the strap. As the strap wears and becomes thinner, the change in position of the pawl 55 causes the link 54 to change its angular gosition with respect to the plunger 53. bviously, in this construction the pull on thestrap 30 throws the drum out against the rigid abut ment shoe To insure the immediate freeing of the drum and the consequent winding-up of the strap 30 at the end of the checking action, the drum is forced by the spring 51 away from the fixed abutment shoe 50, hus permitting the strap to freely slip around the drum and wind up on the spiral return spring 29.

This modification involves the same idea of an eccentrically mounted drum moving against an abutment under the pull of the friction band, to obtain a gripping action on the latter. I prefer, however, the construction first shown with the yielding abutment, since a gentler action is thus secured, and there is less danger of injury to the arts.

It will of coursg be understood that the position of the parts may be reversed-that is to say, that the frame ofthe rebound check may be mounted on the running gear, and the attaching end; of the friction band may be secured te -the chassis-and the claims are to be understood. to cover this equivalent.

It may be pointed out further that the pin and slot connection in the construction shown in Figs.- 19',-and the strut 54 in Figs. 1011, serve to limitth'ethrow of the drum against the associated abutment member, viz, the shoe 35 in the one case, and the casing 50 in the other case. Too strong a grip the band between these lritign surfaces is thus prevented.

Various detail changes may be used in the construction which will be obvious to those skilled in the art. For example, the. stud 28 which carries the return spring may be moimted on the frame instead of on the drum, without altering its function; of

frame adapted to be mounted on" the body portion of a vehicle, a friction drum eccentrically mounted on said frame, a friction band surrounding said drum and adapted to be drawn into gripping engagement with and to swing the same, an abutment member cooperating with said friction member and toward which "the latter is swung by said band when in gripping 'enga ement therewith, and means for securin t e end of said band to the running ear 0 the vehicle.

2. Arebound chec devicecomprising a frame adapted to be mounted on the body portion of the vehicle, a friction member eccentrically mounted on said frame, a friction band adapted to be drawn into gripping engagement with said friction member and to swing the same, a yielding abutment member cooperating with said friction memher and toward which the latter is swung 'by said band when in ripping enga ement therewith, and means or securing t e end of said band to the running gear of the vehicle.

3. A rebound check device comprising ,a frame adapted to be mounted on the body portion of a vehicle, a friction drum eccentrica ly mounted on saidv frame, a friction band surrounding said drum and adapted to be drawn into gripping engagement with and to swing the same, an abutment member cooperating with said friction member and towardjywhich the latter is swung by said band 'w' en in gripping'enga ement therewith, an means for securing t 6 end of said band to the running gear o f'the vehicle, together with a return spring; coiled within the drum for taking up slack in the band on the approach of the running (gear and body portions of the vehicle towar each other.

4. A rebound check device comprising a frame adapted to be mounted on the body portion of a vehicle, a friction member eccentrically mounted onsaid frame, a friction'band adapted to be drawn into gripenga'gement with said friction member andto swing the same, an'abutment member cooperating ,ith said friction member and toward whic the latter is swung by said bandwhen in gripping enga ement thereiith, and means for securing t e end of said nd to the running gear ofthe vehicle, tbgether with a return s ring for takinfg up in the band on t e approacho the aber and toward w ich the latter is swun running gear and body portions of the vehicle toward each other, said return spring exerting a biasing effort on said. friction member through saidband to move the friction member away from said abutment 70 member.

5. A rebound check device comprising a frame adapted to be mounted on the body portion of a vehicle, a friction member eccentrically mounted on said frame, a friction band adapted to .be drawn into gripg ping engagement with said friction member and to swing the same, an adjustably yieldingabutment member cooperatin with said frictionmember and toward whlch the lat 30 ter is swung by said band when in gripping engagement therewith, and means for securing the end of said band to the running gear of the vehicle.

6. A rebound check device comprising a frame adapted to be mounted on the body portion of a vehicle, a friction member eccentricall mounted on said frame, a friction ban adapted to be drawn into gripping engagement with said friction member and to swing the same, an abutment member cooperating with said friction member and toward which the latter is swung by said band when in gripping engagement therewith, a spring urging said abutment member toward the friction member, stop means limiting the approach of the abutment member towardthe friction member under the effort of said spring, and means for securing one end of said band to'the running gear of the vehicle.

7. A rebound check device comprising a frame adapted to be mounted on the body portion of a vehicle, a friction member eccentricall mounted on said frame, a friction ban adapted to be drawn into gripping engagement with said friction memer and to swing the same, an abutment member cooperatin with said friction memby said band when in gripping engagemen therewith, a spring urging said abutment member toward the friction: member, stop means limiting the approach of the abutment member toward the friction member under the effort of said sprin means for varying the initial stress of sai spring, and means for securing one end of said band to the running gear of the vehicle. 1 8. A rebound check device comprising a frame adapted to be. mounted on the body portion of a vehicle, a friction member eccentricall mounted on said frame, a friction'ban adapted to be drawn into gripping engagement with said friction mom-- er and to swing the same, an abutment member cooperatin with said friction member and towar which the latter is swung: by said band when in gripping en-' gagement therewith, a spring urging said abutment member toward the friction member, stop means limiting the approach of said spring, means for varying the initial stress of said spring, meansfor indicating said stress, and means for securing one end of said band to the running gear of the vehicle.

9. A rebound check device comprising a pair of members having substantially concentric friction surf-aces of substantially the same curvature, one of said members being eccentrically mounted in combination with.

a friction band arranged between said surfaces and serving by its drag upon said eccentrically mounted member to swing the same toward the cooperating member to grip the band between them together with resilient means bpposin RICHARD T.- nnwron; v p

30' have signed my

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