US1204027A - Rough-ring-testing appliance. - Google Patents

Description

c. E. JOHNSON.

ROUGH RING TESTING APPLIANCE.

APPLICATION FILED )AN.22, I916.

Patented Nov. 7, 1916.

co., WAl-HINSTON, n. cy

rinrrun sra rns rarnnr canton.

cHARLEs E. JoHNson', or ivrusnneon, MICHIGAN.

ROUGH-RING-TESTING AlPPLIANCE.

Application filed January 22, 1916.

To all whom it may concern:

' Be it known that 1, CHARLES E. J onnson, a citizen of the United States of America, residing at Muskegon, in the county of Muskegon and State ofv Michigan; have iIivented certain new and useful Improvements in Rough-Ring-Testing Appliances; and 'I do hereby declare the following to be a full, clearrand exact description. of the invention, such as willv enable others skilled in the art to which it appertains to make and; use the same. i

This invention relates to an appliance to he used in testing the thickness of rough ring. castings from which piston rings are to be produced." In thein'anufacture of piston rings, individual castings; one for each ring are made which, when taken from. the sand have a surface appearance like that of any other iron casting, there being projectipns of metal, a rough and uneven surface, and the like. The first operation is to rough grind these ring castings on their outer surfape and this is accomplished by bringing the ring into contact with a revolving grinder, so that the" outer rough skin is wholly or'partly removed from the ring.-

Thishowever, does not make the. thickness of thef ring uniform as approximately the same amount of material is taken from every part of the outer surface of the ring. Befiqt ny hihs urt er an he on n the operation of making piston rings it is necessary to test the rough ground ring for thickness; and if any ring is too thick at any part of it Circumference it must be returned whe this h ke ed p rtihngrou d way before further operation'on the ring. Previously, it has been customary to take each ringfcasting and place it between t e aws f a ometer g sh t r n th ring iw en t ja s a if t passed, betwee them it could be. further operated upon; Wh le i por ihns said ring i no pass such parts were marked and turned back for grinding at such marked portions. This proces f te ng ring i ve y l at a h Same im v ry d h ltac ve i. th a e.

p lily invention has for its primary object e proy siq 9f, a m anism n h h h rl a ity 9 ngs may e e t d. a he h m? me e we n s pa te mem e e h f which members. when it has once become woirimhji be akeh' r m t e e ce hd Specification of Letters Patent.

member 7 it Patented Nov. 7, 15916.

Serial No. 73,606.

either ground to proper form or replaced by new parts, such parts being of comparatively inexpensive manufacture.

It is also an object 'and purpose of my nvention to provide mechanism for adjust mg one of the parts relative to the other byineans of micrometer construction such that the distance between the parts may be gaged to thousandths of an inch if desired.

Various other objects and purposes not here enumerated, including many novel details of construction \vill'loe apparent as understanding is had of the embodiment shown in the accompanying drawing, in which:

Figure 1. is a front elevation of the ap pliance. Fig. 2 is a side elevation thereof.

Like; reference characters refer to like parts throughout the several views of the drawing.

In the construction of the appliance there is provided an upright 1 having a base 2 which may be secured in any suitable manner to a bench or other rigid supporting construction. From the front face of the upright support at a distance above the base a cylindrical rod 3 extends, and above it is mounted a jaw 4 having its under face parallel to the axis and upper surface of the rod. pin 5 is threaded into and fixed to the jaw passing through a vertical slot 6 in the upright 1, there being provided a member 7 having a hub 8 which is interiorly threaded to engage with the screw threaded outer end 9 of the pin. A washer 8 is interposed between the hub 8 and the support 1 and it will be apparent that by suitably operating the member 7 the member at may be clamped in fixed position with respect to the upright 1 or that by loosening said V may be freed for movement with respect to the upright.

A plate 10 is secured at the upper end of upright 1 by screws or other suitable connections and passing therethrough is a member 11 provided between its ends with a circular enlargement 12 which seats in a depression on the underside of the plate. Both ends of the member 11 at each side of part 12 arescrew threaded, the lower end threading into a sleeve 13 which enters into an opening in an upward extension let to the member 61. Sleeve 13 is fixed with respect to the part 14 after it has been threaded to place by a pin '15 passed through the extension and entering grooves or notches on the interior of the extension and exterior of the sleeve.

Above the plate 10 a collar 16 is secured on the upper part of the member 11 and directly above the collar is a lock nut 17 above this coming an operating head 18 which is interiorly bored and threaded to receive the upper end of the member 11. Parts 16, 17 and 18 are threaded to position on the member 11 and then the lock nut 17 and the head 18 are screwed down against the collar 16 looking all the parts against movement on member 11. Around the collar 16 is located a sleeve 19 through which a set screw 20 passes, its inner end seating in an annular groove made in the collar 16. The lower part of the sleeve 19 is formed into a disk 21 having inclined sides on which appear graduations, twenty-five in number, to complete the circle of the disk. The threads to the inch in the lower end of member 11 are forty in number. This is the way I have constructed the device though it is to be understood that various other numbers of threads to the inch and numbers of graduations on the disk 21 may be used quite as well. A nut 22 is threaded on the upper end of sleeve 13 which is tapered and longitudinally cut at its upper end for the purpose of locking member 11 against movement with respect to sleeve 13 after it is once set in proper position.

In operation the upper jaw 4 is brought into contact with the rod 3 and the sleeve 19 and disk 21 are adjusted so that the zero mark on the disk is directly opposite a mark upon the plate 10 which may be used to indicate the starting point for separation of the parts 3 and 4. To elevate the jaw 1 nut 22 is first loosened and the operating member 18 is then grasped and turned so that the screw 11 is threaded into the sleeve 13. -With each revolution of the screw one-fortieth of an inch or what amounts to twentythousandths of an inch will be the additional separation of parts 3 and 4: as there are forty threads to an inch on the lower part of screw 11 as previously described and by turning the device a suflicient number of times jaw 4 may be raised above rod 3 any desired amount or what must be the limit within which rings of a certain character must pass. On account of the graduations on the disk 21 this distance may be adjusted to thousandths of an inch as will be apparent. After the rod 3 and jaw 4: have been separated the required amount the device is in condition for use. In use a plurality of rings after they have been rough ground, are placed upon rod 3 as shown in Figs. 1 and 2 and are turned about their centers over this rod. Those that pass freely between jaw 4 and the rod 3 are passed for further operation while those which bind between said upper member 4 and rod 3 at any point are marked at such points and are returned for further grinding at such points.

From the foregoing it will be apparent that a large number of rings may be tested very rapidly with this appliance. In fact in practical use, one man can test with this appliance what five or more could test with the previous micrometer method of testing. It will also be noted that the rod 3 when it becomes worn by the passage of rings. over it can be removed and reinserted to change its position so as to present the proper cylindrical surface at its upper side and that after it has become worn on all sides sufficient to render it useless in the machine it may be removed and replaced by another. Furthermore the upper member 4: is easily removed from the mechanism and if it becomes worn on its underside may be ground again to a proper surface for use or if it linallyreaches a stage where it cannot be further used it can be replaced by another.

This device in actual practice has proven to be of great utility and value.

Many changes in minor detail of construction may be resorted to without departing from the invention and accordingly I do not wish to be limited other than is necessitated by the terms of the claimswhich define the invention.

I claim 1. In combination, a support having a ver- 7 tical slot therein, a rod projecting from the support, a jaw located adjacent the rod with the adjacent surfaces of the rod and jaw positioned parallel to each other, means to move the jaw on the support a measured distance, a pin attached to the jaw and extending through said slot in the support, and a member having an interiorly threaded hub threaded onto the end of the pin to effect the clamping of the jaw to the support, sub stantially as described.

2. In combination, an upright support, a rod having a curved upper surface projecting therefrom a distance above the base of j the support, a jaw located above the rod with its underside parallel to the upper surface of the rod, a vertical extension to the jaw positioned adjacent and parallel to the support, a plate attached to the upper end of the support and extending over said extension, a screw threaded member mounted on the plate and connecting with said extension whereby rotation of the member will raise or lower the jaw, and means for clamping the jaw at any desired position of adjustment thereof.

3. In combination, an upright support, a rod extending in substantially horizontal position from the support, a jaw having its under surface parallel with the upper surface of the rod mounted above said rod, means 10 which said lower end of the member proectS, a collar attached to the member above the plate, a sleeve adj ustably mounted on the collar, a disk provided with radial graduations on the sleeve, and an operating head attached to the member above said collar and sleeve.

In testimony whereof I aflix my signature.

CHARLES E. JOHNSON.

Witnesses:

GEORGE D. VANDERWERP, CHRIS SOHRIER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). C.

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