US2007507A - Sizing device - Google Patents

Description

July 9, 1935. A. P. STEINER SIZING DEVICE Filed May 4, 1932 INVENTQR 41mm: 1? Sta'mm:

ATTNEY Patented July 9,1935 a 2,007,507

UNITED STATESMPATENT OFFICE Amos P. Steiner, Waynesboro, Pa.., asslgnor to Landis Tool Company, Waynesboro, Pa., a corporation of Pennsylvania i Application May 4, 1932, Serial No. 609,220

3 Claims. (01. set-112) This invention relates to sizing devices and its angles to the screw 24. A tension spring 26 is object is to provide a device which is extremely attached to the bracket l6 and to the arm 23 sensitive to variations in the size of the work and tends to hold the contact element 2| in enwith means for'indicating such variations. gagement with the work. Within the bracket 5 A further object is to provide a sizing device I6 is a chamber 21 with which communicates a 5 having a sizing element and an indicator which fluid pressure line 28. A restricted nozzle elemay be positioned some distance from the work ment 2!! is positioned in communication with the being sized. chamber 21. Fluid under pressure is permitted Referring to the accompanying drawing, which to issue from the line 28 through the chamber 21 is made a part hereof and on which similar refand the restricted opening in the nozzle 29 eslo erence characters indicate similar parts, caping between the outer end of the nozzle and Figure 1 is an end elevation of a grinding mathe inner end of the adjustable screw 24 carried chine showing my device applied thereto, and by the arm 23. The restricted opening in the Figure 2, an end elevation of a grinding ma nozzle 29 tapers toward the outlet. By reason chine showing the details of the device and showof this structure the stream of air issuing from 15 ing it applied to the sizing of aball race. the nozzle is held together for a greater distance For purposes of illustration the invention will from the end of the nozzle than if the walls of be shown and described as applied to a grinding the restriction were parallel or flared. The fluid machine and the grinding machine selected for conduit 28 is preferably flexible to permit the an illustrative purposes is one for rindin internal necessary os i n of the work Support I5. races of ball bearings. The invention, however, This co duit is att ched to a fluid line 30 in is in no sense limited to grinding ball races nor is which fluid is confined under a relatively constant it necessarily limited togrinding machines for pressure. In communication with the fluid line obviously it could be adapted to other machines 28 is another fluid conduit 3| which is a tached with equal appropriateness. to a pressure gauge 32. The gauge 32 may be 25 In the drawing numeral l0 refers to the bed mounted upon the wheel base so as to be in conof a grinding machine having a wheel bas l| venient view of an operator of a machine or it supporting a grinding wheel l2. Conventional may be positioned in any other suitable or mechanism I3 is provided for adjusting the whee venient place as there is no connection between so base toward and irom work piece M here shown it and any op at port of the wheel base as the inside race for ball bearings.- The work In Operation w fl under a given p is mounted in any suitable way upon an oscillat- Sure in the line 30 d W t element 24 at a ing work support I5 so that the groove in the p d t i d p s t on m h nozzle 9. flu d work may be rotated about the periphery oi the ay ap r h the l 28 a a constant 35 grinding wheel to properly grind the groove in rate. This will afiect the pressure in the lina 28 35 the periphery of the work. Means for gauging d in the line 3| which P u Will regitel the size of the work consists of a bracket i6 seon the gauge As the x e s stock s removed curedv upon the oscillating work support Is by from the work the contact element 2| swings means of bolts H or other securing means. In counterclockwise ahcllt its Pi t Point is b the upper side of this bracket is a bearing for a ing screw 24 nearer to the nozzle 29 and restrict- 40 shaft l8 upon which shaft is mounted an arm ing h fl w of fluid thr u h th n zl As th IS. The arm is split at its upper end to fit; work decreasesinsize the pressure in lines 28 and around the shaft l8 and is secured to the shaft 3| bu p and this increased Pressure y he by means of a tightening screw 20. A rough ad d c d on the au Befcle Starting a justment of the arm |9 about the shaft I8 is progrinding p a on the gauge will pr y 45 Vided by the screw 20. The lower end of th have been set so that when the hand or marker arm l9 carries a contact point 2| which is seat a predetermined Point it Will indicate that cured in position by means of a screw 22. vsethe work is reduced to the correct size. From cured to the shaft l8 and preferably on the side the foregoing descrip i W ll apparent that of the bracket lii'opposite from the arm I9 is a I have p ov d a y Sensitive device Which 50 lever or arm 23. This lever is rigidly secured to will indicate when work has be t0 the the shaft Ill. The outer end of the arm 23 carries desired S an adjustable screw 24 which is lacked in ad- I will be o viou to ho kill d in the ar justed position by means of a screw 25 which that various cha s may be ad in y d i passes through the end of the arm at right without departing from the spirit of the invens 55 tion and therefore I do not limit myself to what is shown in the drawing and described in the specification, but only as indicated in the appended claims. 1

Having thus fully described my said invention, what I claim as new and desire to secure by Letters Patent, is:

1. In a grinding machine, the combination of a grinding wheel and a work sizing device including a nozzle from which fluid under pressure issues, a fluid pressure controlled means connected to the nozzle for indicating changes in pressure and thereby the size of the work as it is being ground, a pivoted lever having one end thereof associated with said nozzle for controlling the flow of fluid from said nozzle, and means carried by the lever and contacting with the surface of the work being ground whereby the, position of the lever is determined by the surface of the work, said lever and said nozzle being disposed so that the fluid flow from the nozzle is decreased as the work approaches finished size.

2. In a. grinding machine, the combination of a grinding wheel and a work sizing device including a nozzle from which fluid under pressure issues, a fluid pressure controlled means connected to the nozzle for indicating changes in pressure and thereby the-size of the work as it 'is being ground, a pivoted lever having one end thereof disposed adjacent said nozzle, a member capable of adjustment to difi'erent set positions on said lever and disposed opposite said nozzle for controlling the flow of fluid from said nozzle, and means carried by the lever and contacting with the surface of the work being ground whereby the position of the lever is determined by the surface of the work, said lever and said nozzle being disposed so that the fluid flow from the nozzle is decreased as the work approaches finished size.

3. In a grinding machine, the combination of a grinding wheel and a work sizing device including a nozzle from which fluid under pressure issues, a fluid pressure controlled means connected to the nozzle for indicating changes in pressure and thereby the size of the work as it is being ground, a pivoted lever having one end thereof disposed adjacent said nozzle, a member capable of adjustment to different set positions on said lever and disposed opposite said nozzle for controlling the flow of fluid from said nozzle, and means carried by the lever and contacting with the surface of the work being ground whereby the position of the lever is determined by the surface of the work, said lever being pivoted intermediate its ends and arranged relative to said nozzle so that all movements of the lever caused by the decrease in the size of the work causes the adjustable member carried thereby to be moved toward the nozzle for decreasing the fluid flow from the nozzle.

AMOS P. STEINER.

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