US1268073A - Adjustable wedge. - Google Patents

Description

1. 8.5mm & Y2. P. CORNELL.

ADJUSTABLE WEDGE. APPLICATION. FILED AUG.6. I917! LMBMN; Patented Ma 28, mm

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JOHN B. SWAN AND ZOBASTO 1. CORNELL, 0F GLADSTONE, MICHIGAN.

ADJUSTABLE WEDGE.

Specification of Letters Patent.

Patented May 28, 191%.

Application filed August 6,1917. Serial No. 184,699.

I To all whom it may concern:

for retaining the wedge in an adjusted set position.

Another object of this invention is the production of an adjustable wedge, wherein there is provided an adjusting sleeve, arranged so as to reinforce the adjusting bolt and at the same time aid in holding the wedge in an adjusted set position.

A still further object of this invention is the production of an adjustable wedge,

wherein a sleeve is mounted upon the adjusting bolt, so that upon the movement of the nut carried by the adjusting bolt, the sleeve may be moved to engage the wedge for assisting in holding this wedge in an adjusted position, thus, relieving considerable of the strain from the head of the bolt, the bolt also being retained in a set position.

With these and other object in view this invention consists of certain novel combinations and arrangements of parts, as will be hereinafter fully described and claimed.

In the accompanying drawing:

Figure 1 is a central vertical section of the driving box frame, and adjustable wedge of thedevice class described, illustrating clearly the manner in which the sleeve facilitates the retaining of the wedge in a set position.

Fig. 2 is a vertical section taken on the line 2-2 of Fig. 1, looking inthe direction of the arrow.

Fig. 3 is a detail perspective view of the adjusting wedge.

Fig. 4 is an elevation of the adjusting bolt.

Fig. 5 is a detail perspective view of the adjusting sleeve.

By re erring to the accompanyin drawing by numerals, it will be seen t at the frame 1 is provided with the usual driving box 2, in which there is carried the usual driving block 3 comprising a pair of sections secured together, as shown at 4, and having pushings 5. It is, of course, obvious that this block is adapted to carry one end of the driving shaft in the usual manner. The shoe 6 fits within the driving box 2, and has side flanges as indicated in dotted lines at 7 in Fig. 1, which will hold the shoe 6 against displacement. This shoe 6 bears upon one side of the driving block 3, so as .to form the guide upon which this driving box fits at one side.

The adjusting wedge 8 has side flanges 9 formed thereon, and these side flanges 9 overhang the frame 1, adjacent the driving box 2, so as to be held against side displace- :ment. It should be noted that the adjusting wedge 8 is narrow in breadth adjacent its upper end, as shown in Figs. 1 and 2, although it increases in breadth toward its lower end to form a wedge like structure. It is, therefore, obvious that as this adjusting wedge is interposed between one side of the driving block and the driving box, the wedge will slightly move the driving block, since this wedge also bears upon a slanting side 10 thus taking up wear occasioned by the up and down motion of the driving block, when it is in use. This wedge 8 is provided with a bore 11 projecting there through, adjacent its lower end, while the slot 12 extends into the lower end of the wedge 8 to communicate with the lower portion of the bore 11.

The strap 13 is retained by a bolt 14, which projects through the strap 13 adja cent one end, and also through the frame 1, and this bolt is retained by the usual nuts 15 passing the strap 13 for firmly holding the bolt 14 upon the lower portions of the frame 1, adjacent the driving box 2.

The auxiliary frame is formed from a single strip of material and comprises a bridge 16. having diverging legs 17 project ing therefrom, these legs 17 terminate in oppositely projecting feet 18. It should be. noted that one foot 18 isheld by one of the,

bolts 14, upon the strap 13, while the bolt and nut 19 retains the remaining foot 18 upon the strap 13. Furthermore, the strap 13 is provided with a vertical bore 20 projecting vertically therefrom, in alinement with the reduced opening 21, formed in the bridge 16 of the auxiliary frame.

The externally threaded elongated bolt 22 is provided with a head 23 having a rounded periphery 24, a squared shoulder end of this sleeve.

25 which is formed integral upon the lower end of the head 23, and projects for a dis tance. This head 23is elongated so as to fit in the bore 11, of the wedge 8, and the shoulder 25 fits within the slot, holding the bolt. 22and wedge 8 together. This bolt 22. projects through the bore 20, formed in the strap and also extendsthrough the opening as this bolt is moved it is obvious that the head 23 will also move the wedge 8 to an adjusted set position.

It is a common occurrence, however, that 'wherethebolt is required to take up the entire" stress of supporting the wedge in an adjusted position, in a comparatively short time the head of the bolt as well as the bore formed in the adjusted wedge compels a certain amount of play and wear. It is impossible to mend or fix these bolts, without the taking apart of the entire'driving box, frame and likeelements, for permitting free access to the bolt. In order to accomplish this function the present device is provided with an adjusting sleeve.

An, adjusting sleeve 27 is elongated and has a central unthreaded bore 28 projecting entirely therethrough. An outwardly projecting flange 29 may be formed intregal upon the upperend of the sleeve 27, projecting in opposite directions as clearly shown in Fig. 5, so as to present a comparatively broad bearing surface 'upon the upper This adjusting sleeve 27 I isfitted upon 'the adjusting bolt 22, as shown in Figs. 1 and 2. and the flanges 29 thereof bear upon the lower end of the wedge 8. The adjusting nut30 is also carried upon 1 the bolt 22 and bears upon the lower end of the sleeve 27 for holding this sleeve in an adjusted set position. Since the lower end of the sleeve 27 is carried by the adjusting nut 30 at a point contiguous to the auxiliary frame, the strain imparted to the bolt 22 will not cause the bolt ,to-be broken or injured while .in use.

It should further be noted thatsince the shoulder 25 and the head 23 are of such construction as to fit snugly within the socket and slot of the adjusting wedge, the bolt will be held against rotating, and as a consequence, the nuts carried upon the bolt will be retained in set positions, and will releave any danger of accidental rotation. Therefore, the ends will be held in their correct positions under all circumstances so as to hold the bolt and the sleeve in adjusted set positions. From the foregoing description it will be seen that a very eilicient connection is provided for the adjusting wedge, wherein the bolt is provided with means for holding the same against accidental turning, and also with means for being held in an adjusted set position. Furthermore, the sleeve mounted upon the bolt will be held in an adj usted position, so as to take up the supporting strain of the adjusting wedge, and since the flanges of this sleeve fit between the driving box and pedestal, it will be impossible" for the sleeve to rotate accidentally when in use.

What is claimed is In a device of the class described, the combination with a frame, a block within said frame, a strap against the bottom of said frame and supporting said block, of an auxiliary frame engaging the strap, fastening means engaging the bottom of the block and extending through said strap and a part of the auxiliary frame, said strap being pro vided with an aperture to one side of said block, a sleeve'in said aperture, said sleeve provided at its upper end with an elongated, integral flange, a wedge resting upon said elongated flange of said sleeve, said wedge being positioned between the block and frame, said sleeve provided with a smooth bore throughout its length, an adjusting bolt loosely mounted in said sleeve, said adjusting bolt engaging at its upper end said wedge, a pair of nuts on said bolt between V the inner face of said auxiliary frame and the 7 JOHN B. SWAN.

ZORASTO P. CORNELL.

Gopies'of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. i i Y Washington, D. 0.

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