US1367981A - Motorcycle-backrest - Google Patents

Description

W. A; LAWRENCE.

MOTORCYCLE BACKREST.

APPLICATION mm SEPT. I3. 1919.

1,367,981 Patented Feb. 8, 1921.

a Z j-h o k 1V 2 .9 v H. M? 2 0 f a e v )IWENTOR y @462? ATTORNEY.

VILLIAM A. LAXVRENCE, 03 E31,? GRANGE IE'W JERSEY, ASSIGNOR TO STANDARD ld' ffill MFG. (30., OE NE'W NE? JERSEY, A CQRPORATION OF NEW JERSEY.

MGTORCYCLE-BACKBEST Specification of Letters Patent.

Patented Feb. 8, 1921.

Application filed September 13, 1319. Serial No. 323,643.

To 3-? "207mm it may concern.

Be it known that 1, WILLIAM A. LAW- nrrcn, a citizen of the United tates, residing; East Grange, in the county of Essex 5 and State of New Jersey, have invented certain new and useful Improvements in Motorcycle-Bacl-zrests, of whichthe following s a specification, reference being had therein to the accompanying drawings, which form 1 part thereof.

' -ention relates to motorcycle backand more parti ularly to a type therewhich is detachably connected with the saddle of t e motorcycle, the construction of the rest e such that it may be adjusted to accord with the desires of any rider.

it has been a common practice heretofore to produce, backrests for motor ies which are sold as an article of manufacture indeoendentiv of the saddle structure, the backrest beiniz applied to the motorcycle by the user thereof: Different types of saddles, however, are used upon motorcycles, and in the manufacture of backrests therefor, it.

has heretofore been necessary to produce a different backrest for each type of saddle, to provide spe ial attachments so that rtain portions of the backrest may be Zed and said attachments may be 0 i the standarcircd mechanisms to l es or saddles of formed sac dl Ellis has let. to very unsatiscnditi i s. since the users of motor- .niiliar with different types thus leading to great of backrests and ion both as to the e consumer. ition, I provide a used, but may iromote the com adjustment in addition to its capai vertical angle of the rest, permits the adjustment of the rest in its entiletv toward and from the back of the saddle: Both adjustments are secured bv means of simple mechanisms which will insure the desired rigidity in the assembled structure, and will avoid likelihood of loss bodied in the structures of saddles of dif-v ferent styles, and insure the desired permanency in the connection of the backrest to the saddle by means of said bolts.

The invention consists primarily in a motorcycle backrest embodying therein bars adapted to be mounted upon the screw bolts on opposite sides of the back frame of the saddle, means whereby said bars may be adjusted longitudinally or laterally of the saddle, angle brackets carried by said bars, plates adjustably mounted upon said angle brackets, clutch mechanisms whereby said plates may be pivotally adjusted with relation to said brackets, and a backrest frame pivotally mounted upon said supports; and in such other novel features of construction and combination of parts as are hereinafter forth and described, and more particu- -arly pointed out inthe claims hereto appended.

Referring to the drawings,

Figure 1 is a side elevation of a backrest embodying my invention, one of the saddle springs, ana a portion of the saddle being broken way to disclose the manner of mounting the backrest with relation to the saddle;

lig. 2 is a bottom plan View thereof;

Fig. 3 is a perspective View of a portion of one of the bars, one of the angle brackets, a portion of one of the plates, and the clutch mechanism, permitting and maintaining the angular relation of the backrest;

Fig. l is a detail view of the clutch mechanism; and

F ig. 5 is a detail sectional view of the clamp nut for attaching the plates to the back frame of the saddle.

Like letters refer to like parts throughout the several views.

6-42 attached to the back frame a and underframe a.

The underframe a is connected with the back frame a by means of screw bolts c--c carried by said frame and passing within loops formed in said spring as shown.

This construction. is old and well known in this art, and a further and more detailed description 'ofthis structure and of its action is, therefore, unnecessary. It is also old in the art to mount a backrest in relation to said saddle by means of said bolts 0-c, which backrest is so constructec it may be folded downwardly away from the saddle to facilitate the mounting or dismounting of the rider.

My present invention relates more particularly'to a backrest structure embodyii the characteristics of this old type, wherein thestructure in its entirety may bemounted upon any saddle, irrespective of variance in the position of the bolts cc', and in ad dition thereto, may be adjusted toward or from the back frame, and may have the backrest proper adjusted and maintained at any desired angle with relation to the sad dle. V

In securing the desired result. I employ the supporting bars l, the opposite ends of which are stepped with relation to each other as shown, to bring one end thereof in the proper relation to the back frame a and the other end thereof well below the overhang of the leather seat a. Since the construction of the supports for the ba'clrest at each side thereof is identical wi h that oftheother side; a detailed description of but one side will be given, similar reference letters being used to indicate corres onding parts upon the other side.

-ach end of each bar 65 has a sequence of V spaced openings therethrough, the openings at the end toward the saddle being indicated at rl and those at the other end, at The diameter of the several openings (5 is con siderably larger than thatrof the bolts 0 or 0" over which they are adapted to pass, so as to leave clearance about each bolt sufli cient to receive a shouldered nut e, the reduced portion 8 of which has a loose ht bar by means of an ordinary screw bolt as g which may be passed through any of the openings 7" and d and thus permit adjustment of the bar d laterally of the saddle, or of the bracket 7" toward or away from, or' longitudinally of, said saddle. Such longitudinal adjustability supplements that afforded by the sequence of openings d cooperating with the bolts 0-4, and such lat eral adjustment supplements that lateral adjustment which may be secured by a pivotal movement of the bar 62 about the bolt 9.

One arm f of the bracket f supports a plate it secured thereto by means of a stove bolt .11 passing through a squared opening in said arm or. said plate, as desired, thus permittinga pivotal adjustment of said plate to vary the angular relation of the back support to the saddle seat.

To afiord the desired rigidity of said su port in any adjusted posit-ion aid likelihood of a loss of this adjustment as result of slight loosening of the bolt '2', provide a simple clutch mechanism, the cooperating members of which are respectively held firmly in relation to the brackeand to the plate b so as to be incapable of movement in relation to each other, or to said bracket or plate, except when the nut of the bolt 9 is loosened to permit adjustment of the sai'dplate. l -fhile this result may be secured by brazing or welding the clutch members to said bracket and to said plate, I preferably employ two corrugated washers j7v, having a loose it upon the bolt i, said washers each having an ear or cars 7"7c' thereon bent to overlap and enga ge the edges of said bracket and said plate respectively, and thus hold said parts against rotation except when said washers are disengaged one from the other;

The plates 72! upon opposite sides of the backrest structure are connected by a t e rod m, which in addition to imparting rigidity to the structure, causes both plates to move in unison and forms bearings for the levers n by means of which the frame 0 and the P- id padded support 7) carried thereby, may l e lowered when the rider desires to dismount.

formed as shown, to properly offset the support p with relation to the back of the saddle 0;.

The detailed construction of the 0 and the levers n is immaterial to my present invention, such being old and well known in the art.

While I have shown two angle brackets f arranged at opposite sides of the structure,

it will readily be understood that said brackets might be formed integrally, if desired, although if so made the portion thereof intermediate the bars (Z might impact with the mudguard of the motcrcycle, in the event of a heavy jolt due to an ohstruction in the road, which in addition to the discomfort caused, might mar the guard.

One great advantage secured in a backrest structure made in accordance with my invent-ion, in addition to those above referred to, is that the bars 63, the brackets the plates it and washers y'l1, may all be punched from metal stock and suitably pierced, thus not only permitting an economical production of the structure, but securing great uniformity as to strength. If desired, however, these parts may be cast. Another advantage is that corresponding parts are interchangeable, there being no distinctly right and left parts. The various parts may also be quickly assembled.

In mounting the backrest upon a saddle, the nuts ordinarily securing the underframe a to the back frame a are removed, the forward end of the bars (Z being mounted upon the bolts 0-c' either below said underframe, or between it and the sail back frame, as desired, or as may be necessary. The shouldered nuts 6 are then mounted upon said bolts, the reduced portion 6 thereof passing through the opening a! in the bar (Z of? through the loop in the underframe, thus in suring the engagement of a sufficient number of threads to secure the desired permanent clamping action by said nuts.

If it be found that the bars (Z are not properly positioned with relation to said bolts, the bolt 9 may be loosened, thus permitting pivotal movement of said bars, so as to bring; them into the proper position. If t range of pivotal movement is not sufticiently great, the brackets f may be removed from said bars. ano after the bars have been secured upon said boltreplaced, using the proper openings to secure the desirec projection of the bars (Z. it will be noted that the pivotal relation of the bars (Z and brackets f, and thei capability of rectilineal adjustment, together, will obviate the necessity for precision in the positioning of the openings f, to compensate for slight varianc s in the distance between bolts c-c upon dil'i'crent saddles.

erent opening-s Z (Z may be selects to giv Fl e desired longitudinal position 0; the backrest in relation to the saddle.

When the backrest has been positioned as desired, as to the saddle, the bolt 2' may be loosened to extent to permit the separa tion of the corru washers i 7c, and. the desired rotative movement of the plate It to secure the desired angular set of the back support. In moving;- the plate 7:, the washers will, by reason of the ears it, turn there with the 5, holding the washers stationary. After ccuring the desired angular adjustment, the bolt 2' is tightened, interlockthe corrugations upon the washers j7c, I thus holding" the adjustment. Since the washer y is immovable in relation to the bracket 7", and the washer 70 can have move ment only with the plate 71-, it is apparent there can be no slippage between aid. clutch members and said bracket and said plate.

The operation of the frame 0 and its cooperating parts is old and well known and adetailed description thereof, therefore, un necessary.

By the construction herein described, I am enabled to attach a standardized backrest structure to any saddle, and to vary the longitudinal and angular relation of the back support and the saddle, without the aid of special fittings.

It is not my intention to limit the invention to the precise details of construction shown in the drawings, it being apparent that such may be vari C without departing from the spirit and scope of the invention.

Having described the invention, what I claim as new and desire to have protected by Letters Patent, is

l. A motorcycle backrest embodying therein bass having a sequence of openings therein adapted to be selectively used to mount said bars upon vertically extending screw bolts upon opposite sides of the back frame of the saddle, whereoy said ars may be adjusted l.on.,.,itudinall ,r or lateral y of the saddle, means whereby so cl b rs may be set in any adjusted position, l e brackets carried by said bars, plates adjustably mounted upon said angle brackets, clutch. mechanisms whereby said plates may be p' otally adjusted with relation to said brackets, and a backrest frame pivotally mounted upon saiu plates.

2. A motorcycle backrest embodying therein bars each having an opening through adjacent one end thereof whereby they may be mounted upon the screw bolts on opposite sides of the back frame of saddle, and an opening through the other end thereof, angle brackets each having a sequence of openings through on"- arin thereof, screw bolts adapted to pass through said last named openings in said bars and through any openin in said brackets, where by said bars may be pivotally or rectilineally adjusted with relation to the saddle, plates adjustably mounted upon said angle brackets, clutch mechanisms whereby said plates may be pivotally adjuster with relation to said brackets, and backrest frame pivotally mounted upon said plates.

3. A motorcycle backrest em 'i dying therein bars each having a sequence of openings therethrough adjacent one end thereof, whereby they may be adjustab mounted upon the screw bolts on opposite sides of the back frame of a saddle, and a sequence of openings through the other end thereof, angle brackets each having an opening ed to pass through said openings in said brackets and any openings of said last named sequence of openings in said bars, whereby said brackets may be adjusted longitudinally of said bars, plates adjust ably mounted upon said angle brackets, clutch mechanisms whereby said plates may be piyotally adjusted with relation to said brackets, and a backrest frame pivotally mounted upon said plates,

4. A motorcycle backrest embodying therein bars, one end 01" which respectively is adapted to be mounted. upon the screw bolts on opposite sides of the back frame of a saddle, and having a sequence of openings through the other end thereof, angle brackets each having an opening through one arm thereof, screw bolts adapted to pass through said openings in said brackets and any opening of said last named sequence of openings in said bars, whereby said brackets may be adjusted longitudinally oi said bars, plates adjustably mounted upon said angle brackets, clutch mechanism whereby said plates may be pirotally adjusted with relation to said brackets, and a backrest frame pivotally mounted upon said plates.

5. A motorcycle backr st embodying there-- in bars each having a sequence of openings therethrough adjacent one end thereoi, whereby they may be adjustably mounted upon the screw bolts on opposite sides of the back frame of a saddle, and a sequence of openings through the other end thereof, angle brackets each having a sequence of openings through one arm thereof, screw bolts adapted to pass through any of the sequence of openings in said brackets, and through any of the openings of said last named sequence of openings in said bars, whereby said bars may have pivotal or rectilineal adjustment laterally of the saddle, said brackets may be adjusted longitudinally oi said bars, and said bars may be adjusted toward and "from the saddle, plates adjustably mounted upon said angle brackets, clutch mechanisms whereby said plates may be pivot-ally adjusted with relation to said brackets, and a backrest frame pivotally mounted upon said plates;

6. A motorcycle backrest embodying there in bars adapted to be mounted upon the screw bolts on opposite sides of the back frame of a saddle, said bars each having an opening of larger diameter than said bolts, shouldered clamp nuts, the reduced portion of each having a smooth exterior adapted to pass through said openings, said nuts having a screw-threaded opening extending axially therethrough, whereby said bars may be secured to said screw bolts irrespective of the length of the latter, a backrest frame, and means whereby'said last named frame is supported from said bars.

7. A motorcycle backrest embodying therein bars having a sequence of oucnings therein ada ted to be selectively mounted upon vertically extending screw bolts on opposite sides of the back frame ot a saddle, angle brackets, one arm of each of which is connected with one of said bars, plates, a stove bolt pivotally connecting said plates with the other arm of said bracketsrespec- 'tively, two corrugated washers positioned on each of said bolts between said bracket and said plate, means whereby one of said washers is maintained in a tired relation to said bracket and to said plate respectively, and a backrest frame pivotally mounted upon said plates.

8. A motorcycle backrest embodyingtherein bars adapted to be mounted upon the screw bolts on opposite sides of the back frame of a saddle, angle brackets, one arm of each of which is connected with one of said bars, plates, a stove bolt pivotally connecting said plates with the other arm of said brackets respectively, two corrugated washers poitioned on each of said bolts between said brackets and said plate, an ear formed integrally with each of said washers and bent to overlap and engage the of its associated bracket or plate, whereby one of said washers is maintained in a fixed relation to said bracket and to said plate respectivel and a backrest frame pivotally mounted upon said plates.

9. A motorcycle backrest embodying there-V in bars adapted to be mounted upon the screw bolts on opposite sides of the back frame of the saddle, means whereby said bars may be adjusted longitudinally or laterally of the saddle, angle brackets carried by said bars, plates adjust'ably mounted upon said angle brackets, clutch mechanisms whereby said plates may be pivotally adjusted with relation to said brackets, a backrest frame pivot ally mounted upon said plates, a tie rod con necting said plates, means mounted on said ti rod and operatively engagingsaid backrest frame, whereby said frame may be lowered.

In witness whereof I have hereunto aiiixed my signature, in the presence of two subscribing witnesses, this 9th day of Septem-- ber, 1919.

lVILLIAM A. LAWVRENCE;

lVitnesses A. E. BENTON, F. T. lVEN'rwoRrH.

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