US1765340A - P a t f nt o f fic f - Google Patents

Description

fJune 17, 1930. w, W, LANDSlEDEL 1,765,340

ADJUSTABLE CONTROL CAM Filed oct. 1, 1927 ma, @Maz/umaz Patented June 17, 1930 Unirse STATES- WALTER W. LANDSIEDEL, OF CINCINNATI, OHIO, ASSIGNOE TO REMINGTON RAND rarest 'sferica ING., OF BUFFALO, NEW YORK, A. CORPORATION 0F v:DIEIIJAVVAIEtIEl .ADJUSTABLE CONTROL vCAME Appncation filed october v1, 19a?. serial No. 223,438.

; of a control cam which can be readily adjusted on its cam bar.

Another object is the provision of a readily adjustable control cam for closely spacedrectangular cam bars.

Another object is to provide an adjustable control cam which is simple in design and inexpensive to manufacture.

Other objects and advantages will appear from the description taken in connection with the drawings in which Fig. 1 is a side view of a 'control cam.

Fig. 2 is an end view of a control cam.

Fig. 3 shows a control cam assembled on a cam bar.

Fig. 4 is a diagrammatic view of an assembly of cam bars and a possible arrangement of the control cams.

The control cam 10 comprises a main body' bent laterally as at 12 and thendownwardly to provide a portion 13 which together with the upper portion of the main body of the cam forms a U in which is housed a spring 14 suitably anchoredy on a stud riveted in the main body and projecting loosely through the portion 18.

As shown in Fig. 3, the control cam is mounted on a bar 15, the upper edge of which lies within the U by means of which the cam is locked to the bar against removal laterally of the bar. The ends of the spring 14 bear on the upper edge of the bar and constantly urge the cam upwardly fora purpose about to be disclosed.

The lower end lof the control caml is held against removal laterally of the bar by a laterally Aoffset tongue 16 on a plate 17 spot welded or otherwise rigidly secured to the lower portion ofthe'niain body of the cam.- The lower edge lof theplate 17 is provided with wedge surfaces of the same inclination as the surfaces 11 and which in eii'ect lconstitute a continuation thereof, thereby providing afairly wide bearing. In this way, the eXtra width added to the camis located und-er thegcam bar, thereby not interfering with the -clo'se spacing of the cam bars, (see Fig. 4).

The upper ed-ge 'of the plate 17'is provided with teeth 20, (Fig. 1), cooperating las shown in FigJS with teet'h' 21 on the lower edge of the cam bar 15. As is obvious fromfFig. the control cam 10 is held in its adjusted position 'on the bar by the teeth 2O and 21 which are held inter-engaged by the spring 14. The camy can be moved into any other position after freeing it from the teeth by downward pressure on the cam applied by the hand or any suitable means. Upon release of the pressure, the teeth 2O will bedrawn into engagement with the teeth 21 by the spring 14 to' hold'the camsecurely in its new position of adjustment. y

It is obvious that by increasing the number of teeth per inch on the control cam and the cam bar, a relatively fin-e .adjustment ofy thel cam on the bar can be made if necessary. As seen in Fig. 3, the upper edge of the plate 17 has a long bearing on lthe lower edge of 'the Cain-bar 15 which provides a 'safeguard against tilting movement of the control cam about an axis transverse of the bar. This is' also augmented by the spaced bearino ends of the spring 14.

t is apparent from F ig. 4 that the bars 15 may be closely spaced if. desired, in fact, so close that adjacentV cams of adjacent bars may be placed in actual contact with eachother, or cams on one bar may contact with *.fadjace-nt bars. This is madev possible because of the general construction of the cam embodying a relatively large body por-y portion having one of its sides bentback upon itself to form a U adapted to embrace a cam bar, and a spring stud anchored in said main body portion and projecting into said bent back portion.

2. A control cam comprising a main body portion having one of its sides bent back upon itself to form a U adapted to embrace a cam bar, a spring stud anchored in said Vmain body portion and projecting into said bent back portion, and a spring anchored on said stud and having spaced free endbearing pOrtions.

3. A control cam comprising a main body portion having one of its edges bent back upon itself to Jform a U and its other edge constitnting av cam, and a rack member secured against one side of said main body portion and lying in the plane of the opening of the U.

4. A control cam comprising a main body portion, a rack engaging member secured againstfone side of the main body portion, and a laterally oifset guide lip on said rack engaging member. V

5. A control cam comprising a main body portion,.one edge of which is bent back to form a Ushaped channel to receive one edge of a cam bar, a cam bar engaging plate secured to the opposite edge of the main body portion, and an oifset portion on said plater vforming a U-shaped channel with the main body portion to lreceive the opposite edge oi' the cam bar.

6. A control cam comprising a main body portion, one edge of Which is bent back to form a U-shaped channel to receive one edge oil a cam bar, a plate secured to the opposite edge of the main body portion and adapted to bear against the opposite edge of the bar, an oset portion on said plate adapted to bear against the side of the bar, and a spring Within said U-shaped channel adapted to bear against the first mentioned edge of the bar.

7. A control cam comprising a main body portion adapted to have one of its sides contact with the side of a cam bar, and a cam member secured to said side of the main llgody portion to lie in the plane of said cam 8. Acontrol cam comprising a main body portion adapted to have one of its sides contact with the side of a cam bar, and having one-of its edges provided With cam surfaces,

and a plate secured to said side o the main body portion and provided With cam surfaces in the same planes as said cam surfaces on the control cam. VALTER WM. I n'NDSIEDliL.

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