US1196188A - wahlberg - Google Patents

Description

J. WAHLBEHG.

MICRONIETER.

APPLICATION FILED ocT.29.1913.

Patented Ang. 29, 1916.

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J. VVAHLBERG.

MICROIVIETER.

APPLICATION FILED ocT.29,1913.

Patented Aug. 29, 1916.

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JOI-IN WAHLBERG, OF NEW YORK, N. Y.

MICROMETER.

Specification of Letters Patent.

Patented Aug. 29, 1916.

Application led October 29, 1913. Serial No. 798,008.

T all whom t may concern Be it known that I, JOHN WAHLBERG, a citizen of the United States of America, and resident of New York, in the county of New York and State of New York (whose postofice address is 930 St. Nicholas avenue, New York, N. Y.), have invented certain new and useful fmprovements in Micrometers, of which the following is a specification.

This invention relates broadly to measuring instruments and more particularly to micrometers for use in making ine measurements in the construction of various kinds of machinery or mechanism where exact work is required or in the ascertainment with great exactitude and expedition of any or all of the various dimensions of any selected object or conformation; and aims in part to provide a type of controlling means adapted for either slow control or relatively rapid control at the option ofthe manipulator.

The invention also includes various minor and subordinate features of general application in measuring gages, all as shown in the accompanying drawings, described in the following specification, and particularly claimed in the clauses of the appended claim.

1n the accompanying drawings, which are to be taken as a part of this specification, and wherein are shown two of the various possible embodiments of this invention as at present preferred: Figure 1 is a side elevation of one of said embodiments; Fig. 2 is a rear elevation of said embodiment; Fig. 3 is a vertical sectional view, illustrating a view of the parts relatively located in accordance with the elevation shown in Fig. 1, this figure 3 being partly broken away and partly in elevation; Fig. 4c is a top plan view of the parts shown in Fig. 1; Fig. 5 is a horizontal sectional view, taken on the line 5--5 of Fig. vl; Fig. 6 is a detailed view, showing on an enlarged scale certain of the parts disclosed in Figs. 3 and 5; Fig. 7 is a view similar to Fig. l, but showing another embodiment of this invention; Fig. 8 is a view similar to Fig. 3, but disclosing a possible interior construction of theembodiment disclosed in Fig..7.; and `Fig. 91st viewsimilar to Fig.y 5 but takeny on the line Similar reference c lKiara.ctezrs to lar parts throughout the several views of the drawings.

Referring now to the characters of reference on the drawings, and more particularly to Figs. 1 to 6 inclusive, 10 represents the main frame of the embodiment now being described, which frame is provided with a housing 1 1 within which moves a reciprocating spindle 12, and which frame is also provided with an anvil 13 located in line with said spindle, it being understood that the article to be measured is preferably placed beneath the lower end of the spindle 12 and in contact with the upper surface of the anvil 13, and said spindle moved down until it comes into contact with the article. The frame 10 is further provided with a transverse aperture 14, preferably circular in outline and preferably for the accommodation of one of the ingers of the operator. The interior of the housing 11 communicates with a horizontally arranged chamber located within the frame and adapted to accommodate the gear train which includes the gear 15, the shaft 16 upon which said gear is lxedly mounted, a portion of the hub 17 as shown, the pinion 18, the gear 19 and the shaft 20, the pinion 18 and the gear 19 being both loosely mounted upon said shaft 20 and said pinion and gear being ixedly connected each to each. In Figs. 5 and G is illustrated a possible mode of ijxedly mounting gear 15 upon liub 17, and in this connection attention is directed to the key-way 17 formed in the hub and the key 15 carried by the said gear. r1`he spindle 12 carries `thereabove and interiorly of the housing 11 a cylindrical rack 21 with the rib-teeth of which gear 19 is adapted to mesh, pinion 18 and gear 15 in turn interineshing. A coverplate for the chamber just referred to is provided (Figs. 3 and 4), this cover-plate including a plurality of vertically arranged apertures and a single horizontally arranged aperture as disclosed. W hen the cover-plate is properly in place, one of the vertical apertures admits of the passage therethrough of the screw-head of shaft 18, the other of said vertical apertures permitsof the passage therethroughpof the` hub 17, and, the hori-` zontally arranged aperture L registers, with a similar apertureformed; as showni inlthe main yframe 10:; andthe cover-plate is 'main- ,tained in ,positionbyf means of the screw 23,

this Screw. being. provided. at its .Outer arid.;

with a kerf and at its inner end with a reduced pin extension adapted to cooperate as illustrated with the annular groove formed on hub 17 and thereby to maintain said hub against vertical displacement. A knurled nger piece 24 is bored as illustrated and is adapted to be set in place to take about the hub 17 and rest upon coverplate 22, said finger-piece being iixedly mounted upon said hub in any suitable manner, as by means of the screw 25. The coverplate itself may additionally be maintained in place by means of the utilization 0f additional screws or the like as indicated at 26 in Figs. 1 and 4. Carried also by spindle V12, above rack 21, is a worm 27, the threads of which are adapted to coperate with the appropriatethreads carried interiorly of the upper reduced bore Vwithin housing 11. The extreme upper terminus of the spindle l2 Vhas xedly mounted thereon the knurled sleeve 28. As best shown in Fig. l, the lower exterior edge of sleeve 28 carries the usual orany desired calibrations, arranged horizontally and circumferentially of said edge, and an exterior side face of housing 11 carries the usual coperant or otherv desired calibrations, arranged in vertical prolongation.

Having described'this embodiment of this invention, the operationV thereof, which `should largely be obvious, is substantially as follows: If any of the ordinary slow-motion measurements are desired to be taken, the spindle 12 is advanced toward the anvil 13 by means of the rotation of sleeve 28, the provision of the cylindrical rack 21 insuring that said rack is always in mesh with gear 19 irrespective of the altitude of spindle 12 or the rotation and longitudinal travel of the latter; and while the associated geartrain is during such travel set into motion, no particular harm results therefrom since the finger-piece 24 will merely rotate simultaneously with, and in the present instance at a smaller speed than, the rotation of sleeve 28. It is often desirable, however, in aid of expedition at least, to advance the spindle more rapidly toward the object to be measured than is conveniently possible by means of the normal utilization of sleeve 28, in

'which case, in the present embodiment, it

would merely be necessary to rotate the finger-piece 24 and thereby through the gear-train aforesaid, the driving gear 15 of which is fixedly connected to said nger piece and the last-driven gear 19 of which is always in meshV with the rack 21 ir'respecL tive of the altitude of spindle 12. The preferable process is to manipulate finger-piece 24, thereby to cause the spindle 12 to approach at relativelyhigh speed to and to within close proximity to the article supported on the anvil 13, and nexttomanipulate sleeve 28 to advance said spindle against said article and into contact therewith at a relatively slow speed.

Referring now to the embodiment disclosed in Figs. 7 to 9 inclusive, it will be seen that there are here provided the frame 10, the housing 11, the spindle 12, the anvil 13, the aperture 14, the cylindrical rack 21, the worm 27, the knurled sleeve 28 (which is disclosed as being here mounted upon the worm 27, however, as by means of a screw 28), and calibrations similar to those mentioned in connection with the description of the embodiment of this invention disclosed in Figs. 1 to 6 inclusive. The interior of the housing 11 also in the present instance communicates with a chamber 29 similar to the chamber which in Fig. 3 accommodates the gear-train above described.

The gear-train which is in this embodiment accommodated within chamber 29, is, however, dissimilar to the gear-train of Fig. 3,

and includes a gear 30 which meshes with Vthe rack 21, a pinion 31 which meshes with the gear 30, a pinion 32 which is fixedly carried by gear 30, and a gear 33 which meshes with said pinion 32. Pinion 32 and gear 30 are mounted loosely upon a shaft 34. Pinion 31 is fixedly mounted upon the lower end of the shaft 35, and gear 33 carries an elongated hub-portion which loosely sleeves said shaft 35. The cover-plate 22 in the present instance is provided with a vertical tubular extension as disclosed, this extension being adapted Vloosely to sleeve the hub-portion of gear VAn auxiliary finger-piece 38 is in the present instance ixedly mounted upon the upper end of shaft 35, as by meansof the screw 39.

Having described this embodiment of this invention, the operation thereof, which should largely be obvious, is substantially as follows. It will be seen, when the sleeve 28 is manipulated at, say, 3/ speed, that the spindle 12 will travel at y speed. It will also be seen, when the Hilger-piece 24 is manipulated at. said fg. speed, that, since said "finger-piece. 24, being .clamped upon the hub portion of gear-33, establishes said gear 33 as the driving element of the gear-train, theY spindle 12 will be moved at a speed greater than Y/ speed. It will also be seen speed, and vice versa,W whereby by alternately making one of them the manipulated part the operators lingers may be less liable to become cramped and weary.

Inasmuch as many changes could be made in the above construction, and many apparf ently widely dierent embodiments of my invention could be made without departing from the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense. It is also to be understood that the language used in the following claim is intended to cover all the generic and specific features of the invention herein described and all statements of the scope of the invention which, as a matter of language, might be said to fall therebetween.

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

A measuring instrument comprising a threaded gaging spindle, a support with which the spindle has threaded connection, a table or support for the article to be measured, and manually operated means including gear elements coperating with the spindle to move it toward and from the table and to hold it in any adjusted position, the parts being shaped so that the device may be held by the lingers of one hand,

leaving the thumb and indeX linger of that hand free and in position to operate said means.

In witness whereof I have hereunto signed my name in the presence of two witnesses.

JOI-IN WAHLBERG. In the presence of- AUGUsTUs M. HENRY, ALDA L. MILLER.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C.

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