US674591A

US674591A - Lever.

Info

Publication number: US674591A
Application number: US3661600A
Authority: US
Inventors: James H Baker
Original assignee: JAS H BAKER Manufacturing CO
Current assignee: JAS H BAKER MANUFACTURING Co
Priority date: 1900-11-15
Filing date: 1900-11-15
Publication date: 1901-05-21
Anticipated expiration: 1918-05-21

Description

I Patented May 2|, I90I. J. H. BAKER.

LEVER.

(Appljcltion filed Nov. 15, 1900.)

(No Model.)

NINEENTOI m: nomus PETERS o0. PNOTO- L|YND.. wnsuma'mn, n. c.

Nrreb STATES JAMES H. BAKER, OF ALLEGHENY, PENNSYLVANIA, ASSIGNOR TO JAS. H. BAKER MANUFACTURING CO., OF PITTSBURG, PENNSYLVANIA.

LEVER.

SPECIFICATION forming part of Letters Patent No. 674,591, dated May 21, 1901. Application filed November 15, 1900. Serial No. 36,616. .No model To all whom it may concern: eye is formed and the bar bent to U shape, Be it known that I, JAMES H. BAKER, a citias shown in Fig. 1, the web blankl is placed zen of the United States, residing at Allein position, the dovetailed edges of the blank gheny, in the county of Allegheny and State fitting Within the groove, the sides of which 5 of Pennsylvania, havein vented or discovered flare outwardly, as shown in Fig. 4. The legs certain new and useful Improvements in Le of the U-shaped rim are then closed around vers, of which improvements the following is the end of the web blank and the ends of such a specification. legs bent to form an eye 5 and welded to- The invention described herein relates to gether, a filling-piece or ring being preferably to certain improvements in brake-levers and in inserted in the groove of the portion of the the method of manufacturing the same, and bar forming such eye.

has for its object the production of a lever If the bar forming the rim or flange is hot from wrought or malleable metal and the when applied to the web, the flaring sides of strengthening of the lever laterally. the groove are pressed or hammered down 15 The invention is hereinafter more fully deonto the Web, thereby firmly connecting the scribed and claimed. web and the rim or flange portion by a dove- In the accompanying drawings, forming a tailed joint. If the web portion is cold when part of this specification, Figure 1 is a plan the rim or flange is pressed thereon, the conview of a completed lever. Fig. 2 shows in traction of the metal of the rim or flange will 20 plan the several parts which are combined to cause the latter to tightly grip the web; but

form the lever. Fig. 3 shows transverse sec-, it is preferred to employ the interlocking contions of the blank for the web, and Fig. 4 is struction, so as to avoid all liability of the a sectional view through the eye of the rim rim springing away from the web when the or flange blank. Figs. 5 and 6 are sectional lever is subjected to heavy strains.

2 views on planes indicated by the lines V V If desired, the ends of the lever may be and VI VI, Fig. 1; and Figs. 7 and 8 are simiheated to a welding heat and hammered so as lar viewsindicating modifications in the structo unite the portions of the rim or flange on ture of the lever prior to and after the pressthe inner sides of the eyes.

ing of the rim onto the web. The levers thus constructed presenta maxi- In the practice of my invention I provide mum edgewise strength with a minimum of a blank 1 by forging, rolling and forging commaterial, the flange or rim serving to prevent bined, or by casting, having approximately lateral bendingof theleverwhen understrain.

the shape shown-4. e., its sides flat or par- Where the levers are to be subjected to esallel and its edges tapering toward both ends. pecially heavy strains, it is preferred to rein- 5 At the fulcrum-point of the lever the web is force the flanges or rim byforming along their 8 thickened, as shown at 2, to form a good bearinner edges supplemental or reinforcing ribs ing for the pivot-pin of the lever, and it is '7, as shown in Figs. 7 and 8. preferred thatthe edges l of the blankshould By my improved method I am enabled to be made dovetail in shape, as shown in Fig. form a flanged lever from a material-z'. (2.,

4o 3, preferably by thickening the edges of the wrought metalwhich is much stronger than blank. The rim or flange of the lever is the malleable metal now used for that purformed by a bar 3, provided with a groove 4: pose and am enabled to connect the rim and along one side. Before applying the bar 3 web in such manner as will avoid all liability to the blank it is preferred to form therein of any separation of the parts.

5 one of the eyes 5, as shown, by bending the I claim herein as my iuvention- 5 middle portion of the bar. As it is preferred 1. As an improvement in the art of formfor convenience in construction to groove the ing levers the method herein described conentire length of the bar, a filling-ring 6 may sisting in bending a grooved bar around the be placed in the groove of the portion of the edges of a suitably-shaped web so that the 50 bar forming the eye 5, if desired. After the edges of the web enter the groove in the bar, I00

closing the Walls of the groove down onto the web, and bending the bar at the ends of the web to form the eyes for the lever, substantially as set forth.

2. A lever having in combination, a Web portion and a grooved rim or flange portion surrounding the web, the edges of the web projecting in the groove, and eyes formed by the rim or flange portion at the ends of the web, substantially as set forth.

3. Aleve r having in combination a web portion provided with dovetail edges, and a grooved rim or flange extending around the web, the sides of the groove fitting around Witnesses:

DARWIN S. VVOLOOTT, F. E. GAITHER.

JAMES H. BAKER.