US799533A

US799533A - Micrometer height-gage.

Info

Publication number: US799533A
Application number: US22908304A
Authority: US
Inventors: Charles D Clark
Original assignee: Individual
Current assignee: Individual
Priority date: 1904-10-19
Filing date: 1904-10-19
Publication date: 1905-09-12
Anticipated expiration: 1922-09-12

Description

PATBNTED SEPT. 12, 1905.

G. D. CLARK. MIGROMETER HEIGHT GAGE.

APPLICATION FILED 00T. 19. 1904.

z if

y UNITED STATES PATENT OFFICE. .l

MICROMETER HEIGHT-GAGE.

Specification of' Letters Patent.

Patented Sept. 12, 1905.

Application filed October 19, 1904. Serial No. 229.083.

Be it known that l, (inmunes l). (Thank, a citizen of the United States, residing at rlorrington, county ofv llitchlield, State of (lonnectieut, have invented a new and useful Microineter Height-Hage, of which the following is a specification.

My invention has for its object to provide a micrometer hei ght-gage adapted for general use, and especially adapted for use on metalworking machines ygs planers, shapers, and milling-machines to determine the finished thickness of' a piece of metal to be operated upon, which may be either a large piece of metal or a key or gib, in thousandths of an inch.

Heretofore the custom in machine-shops has been to set the tools of planers and other metal-working machines by the use of standard-size blocks. This method of determining the height of a tool is seriously inconvenient, as it requires that a number of standard-size blocks be kept handy and for tine adjustments requires building up with thin pieces of metal. My present invention enables me to adjust the tool of 'a planer or other metal-working machine to any desired height to produce a given thickness of the piece of metal to be operated upon in thousandths of an inch, one., two, and three inch extension-pins being provided for use in determining the thickness of large pieces of metal.

With the above-stated and other objects in view 1 have devised the novel micrometer height-gage which I will now describe, referring to the accompanying drawings, forming part of this speciiication, and using reference characters to indicate the several parts.

Figure l is an elevation illustrating the use of the novel tool in setting in thousandths of an inch the tool of a metal-planer without the use of an extension-pin; Fig. 2, a perspective of my novel height-gage as in use, illustrating the mode of adjustment; Fig. 3, a view, partly in elevation and partly in section, illustrating the construction of the tool and also illustrating the use of an extension-pin; Fig. 4, an elevation of the barrel detached;' Fig. 5, an elevation, partly broken away, of the gage plate and sleeve detached; and Figs. 6 and 7 are elevations of extension-pins detached.

20 denotes the base, and 21 the shank, of my novel height-gage, whichL is provided with a shoulder 22. As shown in Fig. 1 and indicated in Fig. 2, said base 2O is of a length and width to enable the device as a whole to stand rscale-sleeve 27. 'lhe innersleeve is provided at its upper end with a huh 29, to which the outer sleeve is rigidly secured hy a drive lit and below the hub with a thread 28. The upper end of the scale-sleeve is externally rcduced in diameter, and the lower end of the outer sleeve is internally enlarged in diameter, so that the two sleeves are secured together bya frietional engagement, as at 30, the lower end of'the outer sleeve resting against a shoulder 40 on the scale-sleeve. This frictional engagement of the scale-sleeve with the outer sleeve is sufieiently tight so that the parts are immovable relatively to each other under all the ordinary conditions of use, but at the same time it is permitted to adjust the scale-sleeve relatively to the outer sleeve in setting up the tool and also to compensate for wear in use. At the lower end of the scale-sleeve is ascale 41, which is graduated from one to twenty five, indicating thousandths of an inch, a complete rotation of the barrel acting to move the gage-plate and gage-sleeve upward or downward twentyfive thousandths-that is, one-fortieth-of an inch, as will be more fully explained.

31 denotes a gage-plate which is provided with a threaded hole 42 to receive the threaded Shanks 43 of extension-pins 37, with a hole 44 to receive a guide-pin 23, which extends upward from-the base, and with an opening 33, corresponding in diameter with the internal diameter of a gage-sleeve 32, which extends upward from the gage-plate. At the upper end of the gage-sleeve is an internal screw-thread, which engages thread 28 on the inner sleeve. The gage-sleeve is provided with a scale 45, which is graduated to fortieths of an inch-that is, the space betweengraduation-marks is twenty-five thousandths of an inch. Scale 45 is also shown as4 graduated to both eighths and tenths ot' an inch, the figures at the rightin Fig. 5 indicating eighths of an vinch and the figures at the left tenths of an inch.

The upper end of shank 21 is provided with a groove 46, lwhich receives a lug 47l on a check-washer 34, with an external thread 48, which is engaged by a locking-nut 35,'and with a threaded hole49, which is engaged by a locking-screw 36.-

In Fig. 1, 39 indicatesthe bed of a planer or other metal-working tool, and 50 the ling-tool of a metal-planer.

'lhe operation will be obvious to any person skilled in the use ol' mechanics tools. lt will be noted in Fig. 3 that. the shank extends slightly above the locking-nut, leaving the latter sullie-ient play to lock and release the barrel. ln setting up the tool the gage-plate and gage-sleeve are placed in position, as shown, and then the barrel is placed over the shank, the interna-l thread on the gage-sleeve enga-ging thread 2301i the inner sleevel and the lower end of the inner sleeve resting on shoulder 22ml the shank. '.l.`he check-washer is then placed over the upper end of the shank, lug 47 engaging the groove in the shank .to prevent rotation of the washer, which rests upon the top of the barrel. Locking-nut 35 is then turned to place, so that it may bear upon the check-washer, and locking-screw 36 is turned to place to securely retain the parts in position and limit the backward movement of the locking-nut. the gage in use, the operator turns the locking-nut backward, which releases the barrel, leaving it free to be rotated to raise or lower the gage-sleeve and gage-plate, thousandths of an inch, as already explained, being indicated by the scale on scale-sleeve 27 and fortieths, tenths, and eighths of an inch being indicated by scale 45 on the gage sleeve.. lhe operator rotates the barrel in either direction as may be required to raise or lower the gage-plate to any required height, as indicated by the scales. The distance between the bed 39 of a planer or other machine-tool on which the base of the gage rests with the device in upright position and the top of the gage-plate is indicated in eighths, tenths, and fortieths of an inch by scale-sleeve 27in connection with scale 45 on the scale-sleeve, and thousandths of an inch are indicated by scale Veu t- -tl on the gage-sleeve in connection with the l vertical line of scale 45. When the gageplate has been placed at the exact height in thousandths of an inch to which it is desired to finish a piece of metal, the gage-plate is locked in position by turning down lockingnut 35 upon the check-washer and forcing the latter against the top of the barrel, thereby locking the barrel and gage-sleeve carrying the gage-plate rigidly at any adjustment at which it may have been placed. In order to readjust the gage-plate, it is simply necessary to turn the lockingnut backward slightly, whichI leaves the barrel free to be rotated again to raise or lower the gage-plate, as may be required. Having adjusted the gage-plate tothe required height, it may be placed under the cutter of a planer or other metal-working machine, as shown in Fig. 1, and the cutter then lowered' until it just engages the gage-plate, as in Fig. 1.

. With the device in position as shown in Fig. 1 the height of the cutter may be carefully adjusted without reference loany necessity for holding the. gage in upright position, because the base-plate 24) will itsellI insure the standing ol' the gage in upright position. 'lherefore the cutter 5l) of the planer may be. carefully brought. down until it just touches the. upper surl'ace of the gage-plate 3l', after which the gage may be slid out ol posit-ion. 'lhe eutterol' a nnuehine-tool when adjusted in this manner will linsh a piece ol metal to the exact thickness to which the gage-plate of the height-gage was adjusted.

W hen it is desired to set a, machine-tool to linish a relatively thick piece of metal, an extension-pin one, two, or more inches in height may be used (see Fig. 3) and the gage-plate raised sufficiently to place the top of the cxtension-pin at the exact height to which it is desired to finish a piece of metal, measuring fractions of an inch by means of

scales

41 and 45 on the gage-sleeve and scale-sleeve, as before. When an extension-pin is used, the tool of a metal-working machine is lowered to just engage the top of the extension-pix instead of the gage-plate.

i-he base 20 and the gageplate 31 (or an extension-pin 37, carried by the plate 31) constitute spacing members the outer faces of which are employed to determine the distance between the bed of a vplaner and the working face orA edge of the cutting-tool. These outer faces in the embodiment of the invention illustrated comprise the under surface of the base-plate 2O and' the upper surface of the adjustable member, which may be the upper face of the gage-plate 31 or the upper end of an extension-pin 37, carried by the latter. To utilize the device for the purpose stated, the scale 4 5 is of course so formed on the gage-sleeve 32 as to indicate the measurement of the distance between the outer faces of the spacing members described in order to determine the height of the tool above the bed of the planer.

When it is required to use the gage for gib and key fitting, the gage-plate is turned down toward the base, the base and gage-plate placed in the slot, and then the gage-plate is adjusted to measure the width of the slot in thousandths of an inch by rotating the barrel as before, after which the gage is placed on 'the bed or table of a planer, shapenor millingmachine and the cutting-tool turned down until it just engages the gage-plate, as before. A tool set in this manner will give the finishing cut to a gib or key and cause it to tit the slot with any required degree of closeness.

Having thus described my invention, I claim- 1. In a micrometer height-gage, the combination with a shank having a shoulder 22, and a gage-sleeve adaptedto slide on said shank and having an internal screw-thread, said shank and sleeve carrying the spacing members of a barrel adapted to be rotated on f the shank and comp-rising an i externally- .threaded inner sleeve which bears against the shoulder land.iseng'aged by th'ethread on the gage-sleeve and an outerl sleeve between which and having an internal screw-thread and a gage-plate, the said base-plate having a fiat.

under surface andbeing of a size and shape to support the device in upright position on a bed, of a barrel adapted to be rotated on the shank and comprising inner and outer sleeves, the inner sleeve being externally threaded for engagement with thegage-sleeve which isinclosed between the inner and outer sleeves, the said gage-sleeve havingascale to indicate the distance between the outer faces of the lbase-plate and gage-plate. f 3. In a micrometer height-gage, the combination with a shank and base-plate, 'and a gage-sleeve having a laterally-extending plate#` and adapted to slide on said shank and havingan internal screw-thread, and a plurality of extension-pins adapted to be interchangeably secured to the gage-plate in upright position, for the purpose set forth, of a barrel adapted to be rotated on the shank and comprising inner and outer sleeves, the inner sleeve being externally threaded Ifor engagement with the gage-sleeve which is inclosed between the inner and outer sleeves, the said gage-sleeve having a scale to indicate the distance between the outer' faces of the base-plate and gage-plate.

4. In amicrometer height-gage, the combination with a base-plate having a flat under surface and bein-g of a size and shape to support the device in upright position on a bed, said plate having a shank and a guide-pin extending therefrom, of an internally-threaded gage-sleeve adapted to slide on the shank and provided with a plate having a hole through which the guide-pin passes and a barrel comprising inner and outer sleeves, said inner sleeve being externally threaded to engage the gage-sleeve, and the gage-sleeve being inclosed between the inner and outer sleeves,`

the said gage-sleeve having a scale to indicate the distance between the outer faces of the base-plate and gage-plate.

' 5. In a micrometer height-gage, the combi'- nation with a base vhaving a iat under surface and being of a size and shape to support the device in upright position on a bed, said base having ashank extending therefrom and a gage-sleeve adapted to slide thereon and carrying a gage-plate, of a barrel adapted to rotate on the shank and having a threaded engagement with the gage-sleeve whereby the' latterand the gage-plate maybe raised, and lowered, the said gage-sleeve having,r a scale to indicate 'the' distance between the outer faces of the base and gage-plate. A

6. In a. micrometer height-gage,'the combination with a base having a shank extending therefrom',agage-sleeve adapted to slide thereon, a gage-'plate extending from the gage.- sleeve and a plurality of extension-pins adapted to be interchangeably secu red to the gageplate in upright position, of a barrel adapted to rotate on the shank and having a threaded engagement with the gage-sleeve whereby the latter and the gage-plate may be raised and lowered, the said gage-sleeve having a scale to indicate the distance between the outer faces of the base and gage-plate.

`7. In a micrometer height-gage, the combination with a base having a fiat under surface and being of a size and shape to support the device in upright position on a bed, said base having a guide-pin and a shank extending therefrom, a gage-sleeve adapted to slide onthe shank and a gage-plate extending from .the gage-sleeve and having a hole through "which the guide-pin passes and a threaded hole for Vengagement by extension-pins, of a barrel adapted to rotate on the shank and having a threaded engagement with the gagesleeve whereby the latter andthe gage-plate.

may be raised and lowered, the said gagesleeve having a scale to indicate the distance between the outer faces of the base and gageplate.

' 8. In a micrometer height-gage, the combination with a shank and a-gagesleeve adapted to slide thereon and having an internal screwthread, of a barrel adapted tobe rotated on the shank and comprising an externallythreaded inner sleeve which is engaged bythe thread on the gage-sleeve, an outer sleeve between which and the inner sleeve the gagesleeve isinclosed and a scale-sleeve having a frictional engagement with the end of the outer sleeve.

9. A'micrometerheight-gage comprising a shank-and a gage-sleeve each carrying a projecting member the outer faces of which are IOO IIO

adapted to measure distance, the member projecting9 from the shank having a 'flat under surface and being of a size and-shape to'support the device in-upright'position on a bed,

a-scale being provided to indicate the distance y between said outer faces.

10. -In a micrometer height-gage, the com-` bination with va shank having a groove atfits upper end and agage-sleeve, of a .barrel hav- .and bearing on the barrel and a locking-nut engaging the shank and adapted to bear on the check-washer whereby the barrel and gage-sleeve maybe locked after adjustment.

11. In a micrometer height-gage; the eomthe'parisere retained in place and backward bination with a shank and a gage-sleeve adaptmovement; of the locking-nut is limited. l 0 ed to slide thereon, of a barrel' having thread- In testimony whereof] affix my signature in ed engagement with the gage-sleeve, for the presence of Vtwo witnesses.

A5 4purpose set; forth, a cheek-washer resting onV CHARLES lI). CLARK.

' lhe barrel, a locking-nut engaging theshank and adapted to engage the cheek-washer and a locking-screw engaging the shank whereby Witnesses:

JAMES E. MALLET'rn; MARY C. CAHIR.