US1185745A - Screw-adjusting device. - Google Patents

Description

I. B. WEISMILLER.

SCREW ADIUSTING DEVICE.

APPLICATION FILED NOV. I8 |915.

Patented June 6, '1916.v

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J' OHN B. WEISMILLER, OE NEW YORK, N. Y., ASSIGNOR 0F ONE-THIRD TO CHARLES H.

HESSION, OF BROOKLYN, NEW YORK, AND ONE-THIRD T0 BODGE, OF

N'UTLEY, NEW JERSEY.

SICREW-ADJUSTING DEVICE.

. VSpecification of Letters Patent.

Application led November 18, 1915. Serial No. 62,203.

To all whom it may concern:

Be it known that I, JOHN B. WEI'SMILLER, citizen of the United States, and resident of New York, in the county of Bronx and State of New York, have invented certain new and useful Improvements in Screw-Adjusting Devices, of whichl the following isa specification.

The invention relates to improvements in screw-adjusting devices designed particularly for regulating the spaced relation of the workingparts of machinery, and holding the same against accidental displacement 1ncident to the vibration of the moving inembers;` and the object of the invention is to provide a simple device that may be adjustably operated to the finest extent and in which thelocking tension upon the screw may be readily increased or diminished` to conform with the conditions of various situations.

In describing the invention in detail reference is had to the accompaniying drawings, forming a part of this speci cation, and in which: A

Figure 1 represents a slde view of a common application of the present invention,

arts thereof being shown in section; and gig. 2 shows a modification of one of the members thereof.

As herein shown, numeral 1 designates an ordinary frame, in which is mounted the relatively slidable journal-box 2, carrying an operatingroller 3, arranged for adjustment with respect to an opposing roller 4, journaled in a fixed bearing. A. spring 6 engages one side of the box 2 and normally tends to outwardly-urge the same for the separation ofthe rollers. A set-screw 7 is screw-threaded in the frame 1, with its inner end engaging the adjustable box in opposition tothe spring 6. Exterior of the frame the set-screw is arranged in threaded engagement with the thrust-plate .8, and encircling the screw is a spring 9, the opposite ends of ywhich bear against the frame and thrust-plate, exerting an opposing thrust therebetween and tending to clamp and hold the screw -by friction against accidental turning movement. Loosely extending through the thrust-plate is a stop-screw 10, the inner end of which is detachably -connected to the' frame by a screw-thread formed thereon.

0n the removal of the stop-screw 10, the thrust-plate 8 may be rotated upon the setscrew in .opposite directions for the compression or expansion of the spring 9 4to change the tension thereof to suit the varying conditions of different locations of use. The stop-screw' 10 is then replaced and the set-screw may then be operated without va. rying the spaced relation between the frame and thrust-plate. By turningthe set-screw it will be obvious that an adjustment will be effected between the frame 1 and the box 2, with a corresponding adjustment between the operating rollers 3 and 4.-

In the common form of adjusting means consisting of an ordinary set-screw and locknut, difficulty is frequently experienced in making fine adjustments by the tendency ofl the nut, while being locked, to accidentally turn the set-screw and disturb the effected adjustment. Also, when the nut is loosened for making a new adjustment, gaged by an existing position,j an accidental turning movement of the set-screw again occurs, tending to make the new adjustment uncertain. The present 'invention overcomes these objectional features by maintaining a constant spring tension upon the set-screw and allowing it to beforcibly turned in eitherl direction to anyv extent without loosening the associated parts.

While I have shown the adjusting device as applied to the spacing of rollers, it will be evident that the same may likewise be applied to a varietyof adjustable mechanical parts wherein the relatively movableinembers correspond with the frame 1 and box 2.

In the modification shown in Fig. 2, the inner end ofthe set-screw is provided with a groove 11, which engages a socket 12 formed in the box for effecting the relative movement of the latter in opposite direc.- tions, obviating the use of the above-mentioned spring 6, shown in Fig. 1.

What I claim as my invention and desire to secure by'Letters Patent, is:

1. In an adjusting device, a relatively xed member, a member supported adjacent thereto for relative movement in opposite directions, a set-screw threaded in one of said members and controlling the movements of said movable member, a thrust-plate in threaded engagement with said set-screw, a

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between said thrust-plate and the threaded member, and means for holding said thrustplate against rotation.

2.1'n an adjusting device, a relatively fixed member, a member supported adjacent thereto for relative movement in opposite directions, a set-screw threaded in one of said members and controlling the movements of said movable member, a thrust-plate in threaded engagement with said set-screw, a spring disposed to exert an opposing thrust between said thrust-plate and the threaded member, means for adjusting the thrust of said spring, and means for holding said thrust-plate against rotation.

In an adjusting device, a relatively fixed member, a member supported adjacent thereto for relative movement in opposite directions, a set-screw threaded in one of said members and controlling the'l movements of said movable member, a thrustplate in threaded engagement With said setscrew, a spring encircling said set-Screw and exerting an opposing thrust between said msm-ae thrust-plate and threaded member, and a stop loosely engaging said thrust-plate and detachably secured to said threaded member.

4. In an adjusting device, a set-screw, a thrust-plate in threaded engagement with said set-screw, means for exerting an adjustable frctional resistance to the movement of said set-screw in said thrust-plate, and means for holding said thrust-plate against rotation.

5. In an adjusting device, a set-screw, a thrust-plate in threaded engagement therewith, a spring encircling saidy screw and `exerting a tension on said lthrust-plate for resisting the rotative action 'of said setscrew, and means for holding said thrustplate against rotation.

Signed at New York in the county of New York and State of New York this 16th day of November A. D.-19]r5.` l JOHN B. WEISMILLER. Witnesses:

JOHN A. EADES, CHAs. LA RUE.

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