US921824A - Graduating-machine. - Google Patents

Description

A. GEIGER.

GRADUATING MACHINE. APPLICATION FILED MAY 9, 1902.

Patented May 18, 1909.

4 SHEETS-SHEET 1.

A. GEIGBR.

GRADUATING MACHINE. APPLIUATION FILED MAY 9. 1902.

` INVENTOR @411% 27W @d AI'T ORNE Y.

A. GBIGBR.

:GRADUATING MACHINE.

APPLIOATION FILED MAY 9, 1902.

Patented May 18,'1909.

4 SHEETS-SHEET 3.

ATTORNEY.

A. GEIGER.

GRADUATING MACHINE.

APPLIUATION FILED MAY 9, 19oz.

921 ,824. Patented May 18, 1909.

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ADOLPH GEIGER, OF ROCHESTER., NEW YORK.

GBADUATING-MACHINE Specification of Letters Patent.

Patented. May. 18, 1909.

Appncaaon mea nay 9, 1902. serial No. 106,534'.

To all whom it may concem:

Be it known that I, ADOLPH GEIGER, of Rochester', in the county of Monroe, in the State of New York, have invented new and useful Improvements in Graduating-Machines, of which the following, taken in connection with the accom anynig drawing, is a full, clear, and exact escription.

My invention relates to a graduating machine and consists in an essentially new construction and mode of o eration which may be adjusted automatica ly to Graduate articles of various Jforms such as tunular or lat, and of various materials such as glass, composition, wood or metal, with graduation marks of dilerent lengths and arrangement either uniformly spaced, or gradua ly, or periodically varying.

My invention willy be understood by reference ,to the drawin herewith in which the reference letters an numerals of the s ecification indicate the same parts in a l the figures.

Figure I is a top lan of my machine. II is an enlarged e evation of thetool holder and adjacent parts, portions being shown in section. Fi III is a vertical cross section online III I I of Fig. I. Fig.`IV is a similar view to Fig. III, showing the arts in another position. Fig. V is a side e evation of the operating screw with the 4bed plate shown in section. Fig. VI is an enlarged cross section taken on line VI VI of Fig. I. Fig. VII is an enlargedv horizontal section. of the mechanism by which the graduating marks are regulated- Fig. VIII is an enlarged elevation of the rock arm. Fig. IX is a vertical cross section ofthe cam lever and cam. Fig. X is an enlarged vertical section on line X X of Fig. III. Fig. XI is a corresponding section at right angles to the preceding. Fi XII is a lan of the screw extension enlarge Fig. XI is an end elevation of the feed car-- riage. Fig. XIV is a plan of the graduation l piece. Fig. XV is a cross section thereof on ne XV XV. Fig. XVI is anA end elevation of the main carria e. Figs. XVII and XVIII are diagrams il ustrating the different styles of graduation that may beeected by my machme.

Base andy mechanism is supported on a suitable base orbedlate 1,l provided with track 2 andv elevate track or guide-plate 3, arranged at less than aright angletoreach other, for: the- Workwear .-carriaoe and the'main'carri e Fig.v

operata/ig mechanism-Theclutch, having an operating ever 5 with thel screw-shaft 6, supported in a suitable beaning and carrying the bevel gear'7 meshingwith bevel-gear 8 on.- the screw-extension 9, in bearing*- 1-0. mounted on bed plate 1 as shown in Fi V and rovided` with cross pin '11, fittings ots 12 oi) coupling piece 13, secured by pin 14 to the operating screw 15= supported: in bearing 16 and correspondingy bearing at other endl on guide-plate, 3, by which the screw is rotated. Face 17 of cou ling-piece is. beveled to. corres ond With t I e pitch of the screw thread an t a reverse evel 18`on a ixed bushing 19, whereby during one hall of its revolution, the highpoint y of. the couplingpece rides up the incline 18, forcing the wholeY screw forward and: aecelerating the movement of the main carriage connected thereto; Iwhile during thel other half of the revolution, the highv point rides down the inclinex 18 moving the screfvtr rearwardly, at a speed exactly corresponding to that at which the screw would otherwise tend to move the carrie e forward, wherebyA the main carriage 25 is emporarily stop ed during each rotation, and with, it the ibn ward movement offthe work. The tool can riage and tool are timed to` operate on the work, whileV it is tem Bushing 19 is a forwar bearing of the-screw and iis adjustably held in position by jamnutsshown in front and in rear of bearing 16 in Fig. XII. n

' Main or calamar-Main carriage 25.1moving: on gui e-plate 8 is fitted to the screw 15, by which it is moved forward, and is connected to engage therewith by any suitable means, which may-be released whenV desired. A. part 27 having: two` curved jaws fittingscrew 15 and handle 28 for operating-same is indicated in Fig. VI, but this is not important asl any well known meansmay be used; therefor. At rear end of carriage is fitted; to slot 29a threaded pin shown-in dotted lines aslower end of thumb piece 31 in Fig. VI, having thumb-piece 3l and engaging with bell-lever 37 pivoted.: tov carriage at 38, to which is journaled at 32 the semi-circulan segment 33 whose function is to; carry and guide feed-arm 36, turning on center'3'2. Ait.

opposite end bellelever. has stud on anti-- friction roller 39 to follow flexible steelguidestrip. Toy segment isfitted. guidemoller rarily so stopped; l

piece 40 having set-screw 43 and guide rollerv 41 fitt' 'ide roove 42 inthe guide plate 3. (Flilggl1 andl VI.) 'Ilo segment is also fitted diminishing graduation piece 45, also having'set-screw 46to lock it in position and arm 47 with anti-friction roller 48 to bear against fiexible guide stri when 1n its eirtended position indicated y dotted lines 1n I, and gradually swing the feed-bar to guide -the feed-arm straight by en agement of roller 41 in groove 42. By oosening thumb-piece 31 and also lset-screw 43, the forward movement of feed-arm may be guided (and varied) to effect graduations of varying size according to position of various parts of flexible guide-strip, 'adjusted according to three or more test points, the guide-strip being parallel to screw, in normal position as shown in full lines Fig. I. The combination of gradually diminishing graduation, and variation in adjacent graduations according to test points is effected by tightening set-screw 46 to lock diminishing-piece on segment, when it acts as a guide, its roller 48 following flexible guide-strip in its extended, dotted line position.

Ttejiexible guide strip.*0n one side, the frame is provided with slotted arms 50 50 on which is adjustably sustainedb y the screws 51l 51 the supporting plate 52, provided with bearings 53, on a dove tailed plate in which are sustained the two part carrying screws, carrying the guide strip 54 composed of several thin plates' of steel to afford sufficient flexibility. These carrying screws are composed of handle 55, shank 56 anda screw fitting into the shank and provided With the integral fork 57 for receiving and sustaining the flexible guide plate 54 and affording a space for the roller 37 or 48 to bear on the guide bar between the ends of these forks, so that by turning the handle the fork and guide plate are moved in and out. When the supporting arm 52, and the fiexible guide plate are in normal position as shown in Fig. I, the variation effected by the flexible guide plate is proportioned to smaller graduations, but when they `are swung out more or less into position inclined to the direction of screw 15 the variation is greater and effects graduations at first of larger and of gradually diminishing size. There are several of these carrying screws, as here shown, in order to adjust the fiexible guide stri at various points independently, accor in to the test points.'

W01' -carrying carriagc-This is composed of the feed carriage and the work carriage, essentially one carriage, but separated and adjustably connected, for simplicity in construction andv convenience in adjustment and operation. 60 is the feed carriage fitted to track 2 referably arranged at 45 to elevated gui e plate 3 and bent downwardly as best shown in Fig. V to afford sufficient room for the passage of work-,of large size,

inclined flange 64 carrying one or more in.

clincd anti-friction rollers 65, by which this carriage is secured in position on the slide; 66 is its post or upright, and 67 its top plate, affording a rest for the feed-arm and carrying the stud or anti-friction roller 68 held in constant engagement with that arm by weight 69, fastened to the feed carriage by a cord` passing over a guide pulley as shown in Fig. I, or by other suitablemeans. The feed motion of the feed carriage and the Work carriage is effected by feed-arm engaging with this projecting roller. The greatest movement of the work is effected when the feed-arm is swung back as far as possible (to the left in Fig. I), making a smaller angle with arm and track; when it is turned forward the motion diminishes. In Fig. I is shown a position for a considerable speed of Work-carrying carriage, it not being possible to swing the feed-arm much farther yout than here shown, without binding the parts. By any suitable connection, such as rod 70 adjustable in and out of feed carriage 60, the feed carriage is connected to the work carriage 71 moving the work past the tool, arranged to operate at right angles thereto and by an eccentric and its connections; the Work is temporarily held motionless during the operation of the tool, by the means heretofore described, and the tool after each cut or operati/on is rocked clear from the moving work by means to be described. To work carriage is fitted plate 72 adjustable by screw 73 and carrying'two or more clamps 74 and notched spring-levers 75, by which work 76, such as thermometer tubes of wide range as to length and diameter, may be held firmly in position (Figs. I and IV).

The eccentric and its connections to the tool carriage-On the main shaft 4 is adjustably secured the eccentric A by which the fool is moved across the advancing Work to make the cut; there is also secured thereon the cam B, Whose function of rocking the tool into and out of operation will hereinafter be described. First of the eccentric-to this, by collar C of usual construction, is secured the This feed carriage is- Wheel the length of mark.

eccentric rod D pivotally connected to one arm' of bell-crank or connecting lever E, which is journaled at F to the lower end of the cut-length lever G, controlling with cam- On a guide wa II in the lower arm of the bell-crank isa justabl' secured b set screw J the connect- 111g ro to the too carriage; K is the block fitting the guide way, to which is journaled the screw-stem L of the connecting arm, adjustably connected tothe bar-element M of the rod by suitable nuts N, to adjust the position of the tool carriage and tool according to the size and position of the Work. The bar M is connected to an ear P on the tool carriage 20 fitted to slides Q Q bolted to the frame or base, and extending at right angles therefrom.

Q Q are ordinary grooved bars, supporting' the carriers 20 formed with ribs to fit the ooves. .Between ears R R on the tool carnage is journaled the tool post 21, depending through slot O in the carriage, and to the .up er end ofA which is secured the tool of av orm suitable, eitherv for -metal or for glass work, as hereinafter described, by

set screw 22. This post is provided with integral fiange 23, which is bolted to the rocking piece now to be described, by which, throu 'h the operation of cam B the tool is rocke into and out of operative position at each rotation of the main shaft.

Tool-post rockingmechanism.-Cam B, all of whose diameters are equal, engages with rollers a a to operate cam-rod a, slotted at a2, and is pivotally connected to the inner end of a single rock-arm b, carrying toward its forward -end the block c to the opposite side of which is fixed' the parallel fork-piece d,'exac'tly corresponding` to the front end of the rock-arm the ends of the rock-arm and forkieee are' connected by bolts e e, on whic is journaled handle f, whose forked upper ends are connected by bolt g, on which is fitted the bushing h, preferably of tool steel', having two notches j 7' at 50 more .or less, and locked to the handle by stud z, engaging in a suitable notch. To this bushin 1s tted the collar 7c, (having a longer noten l), of the rocking piece m, pivotally connected at its opposite end n to the hanger p and intermediately bolted to flanges 23 23 of the tool post throu h which or around which it passes. To regu ate the depth of the mark or cut, the end of rocking piece m is elevated and' depressed by adjusting screw g, fitted to turn in a block c and locked in osition therering s on arm t of tool carriage extends through aperture in tool-post and is provided with a nose u extending through notch Z collar k, to engage with one of the notches j in the bushing h to lock tool-post in o erative or non-operative position. As the andle f is turned from one position to the other, the tool is ,thrown into operative position, or thrown out of position and clear of the work, it being rocked at each stroke away from the work after the cut has been made. In Fig. III these parts are shown in position ready to operate; in Fig. IV tool carriage is drawn forward and tool rocked to make the mark; in Fi XI, full lines indicate operative, dotte( lines non-operative position. Figs. II and X are also enlar ed details of rockin mechanism; Figs. VI and IX detache parts. In Fig. III is shown in section a plunger depressed by a spring to assist in oldin the work While being marked.

Mec anism regulating length of graduation marks-On main shaft 4 is ke ed pinion 80 meshing with gear' 81 keyed7 on shifting counter-shaft 82, suitably j ournaled in bearings 83 83; this ear 81 is preferably fitted between two of the bearings 83 83 and connected to the counter-shaft by feather and spline, to maintain a constant position while the shaft is being shifted. On this countershaft are keyed pinions 84 and 85 of different size, and on one end agrooved shifting pulley, In the first position of this shaft here illustrated, the pinion 85 meshes with the larger gear 88 on cam-wheel shaft 89, also' su ported in suitable bearings 90 90. In the second position the larger pinion 84 meshes with the smaller gear 87 of this cam-wheel shaft 89. (See Figs. I and VII). These gears and pinions are so proportioned that in the first position main shaft 4 rotates ten times while cam-wheel shaft 89 is rotating once, and in the second position main shaft rotates four times to once of the cam-wheel shaft, by which the following result is accomplished:

On cam wheel shaft 89 is keyed the cam wheel S provided with opposite pairs of adjustable cams T T and U'U, the detailed yconstruction and arrangement of these cams is best shown in Figs.` III, IV, VII; in the present arrangement adapted to be used for graduating metal articles, the cams T T are adapted to be adjusted inwardly within the periphery of the roller, and the cams U U at any distance from flush with the periphery outwardly, and while the roller is rotating these engage with the projecting stud V on the upper arm of the cut-length lever G fulcrumed at W, whereby the projecting cam forces the upper end of said lever G inwardly, its lower end carrying the bell crank outwardly, and the mark made by the tool on that stroke is longer on one side of the axis of the work and scale.; the reverse is effected by the depressed cams,- the roller V being held in engagement therewith by the compression spring Y. Cam-s T and U are adjusted and clamped on their wheel S by set screws and clamping screws as clearl shown in Fig. VII. FigsXVI and XVII ustrate the operation of these parts, by which gradu ation marks of different lengths and arrangement, and on one or both sides of the axis, are produced. In XVI are shown varieties of graduation produced with counter-shaft in first position and by adjustment only of cams T T. By arranging cams T T iush and cams.

U U outwardly, the marks would be made on the other side of the axis.

The styles of graduation shown in Figli XVII are produced by arranging shaft in second position, and both cams U outwardly and cams T T inwardly. It will be noticed that the cams of each pair maybe differently adjusted. The actual size and variations insize of the spaces are effected by the flexibleguide-plate and feed arm-swung out, this effects high speed and large graduafA tions, swung in, low speed and small gradua tions..

lthe subject of other' applications. l III a screw 120, in bearings, has right and left hand threads engaging with blocks 122 Tool holden-In Figs. III and IV toolholders are sufficiently indicated to show their position. These tool-holders will be In Fig.

' pivot. In Fig. IV' is shown supported on toolpost 21 the spring arm 131 having the bearing 132 secured in place by set-screw 134. In said spring arm is adjustably supported the rod 141 by thumb-piece 140 and spring 143 arranged between thev arm 131 and the nut 144, and connected to the fork 137 by pin 142. The tool is carried in a suitable clamp in the front end of the fork, and by the parts. just described is supported to bear on the work with a delicate resilient pressure.

Operation-To start the machine as for the graduation of a thermometer tube according to Fahrenheit scale in which two test points are iixed, namely, the freezing point and the boiling point-releasing the split nut 27, move the main carriage with the feed arm and also the feed carriage until the center of the feed arm `is over the center of the feed carriage roller, that is, until point 32 is over the center of roller 68. When thus centered the ointer 150 on the main carriage should point to` 32 on a stationary scale 151 (Fig. I) suitably su ported on the machine frame in front of an parallel to the screw will be to the right and to the 'ineides with the tool.

left). Then adjust the thermometer tubeto"v be'graduated in such position that the point The feed carriage will follow bringing the second test point toward the tool, but not coinciding therewith. Then loosen clamping screw onthe segment, that is, set screw 43, i

and swing the feed arm moving the feed carriage until the second test point exactly co- In this posltion, tighten set screw 43 and start the machine. If there are several test points, of course use the flexible guide strip supported von several carrying screws, one corresponding to each test point, and clamp the segment by means of set screw 46. l

Having thus described my invention what I claim and desire to protect by Letters Patent is:

1. In combination in a graduating `ma.-

chine, a suitable base, tracks thereon for the main carriage and the work-carrying .carria e respectively, arranged at an angle to eac other, the main carriage, an arm on the main carriage, the work carrying carriage engaging with said arm, means for securing the work on its carriage, the tool and means for moving the tool across the work.

2. In combination in a graduating machine, a base, tracks thereon arranged at an angle, the main carriage and the work-carrying carriage fitted to the respective tracks, a connection between the carria es, means for varyin the position of sai connection, while t e main carriage is moving, a tool support, means for reciprocating the tool across the work, means for rocking the tool support, means for moving the main carriage, and means for varying periodically the reciprocation of the toolto control the length and position of the raduation marks.

3. In com ination in a -graduating machine, a su porting base, a guide late and a track on tlie base, arranged at ess than a right angle to each other, a main carriage on the guide plate, and means for moving it longitudinally thereon, an adjustable feed-arm on the main carriage and engaging with a work-carrying` carriage, the elongated workcarrying carriage fitted to the track and moved longitudinally thereon by the movement of the feed-arm, a tool-carriage carrying the tool fitted to the base, and means for reciprocating the tool carriage at-an angle to the work to make the graduation marks.

4. In combination in a graduating machine, a sup orting base, a guidelate and a track on the ase arranged at less t an a right angle to each other, a main carriage fittingy l Wa supported on the base adjacent to the the guide-plate and means for moving it forward thereon,V an adjustablefeed-arm secured to the main carriage and engaging with a work-carry ing carriage, an elongated work-carrying carriage fitted to the track and moved forward thereon by the movement of the feed-arm, a tool carriage cari-yin@r the graduating tool fitted to move on thelbase, means for moving the tool carriage at right angles to the work-carrying carriage to move the tool across the work and make the graduation marks, andmeans for rockin thetool out of the path of the work on t e return stroke. A

5. In combination in a graduating machine, a supporting base, gui e-ways thereon for the mam carriage and the work-carrying carriage respectively, a screw supported in suitabzle bearings, a main carriage iitted to its guide-way, and means forengaging it with the screw, an adjustable feed-arm supported on the main carriage and engaging with a work-carrying carriage, the work-carrying carria e fitted to its guide-way, a tool carriage an a tool, means for reciprocating the tool carriage periodically substantially at right angles to the work-carrying carriage, and means for rotating the screw.

Gf In combination in a graduating machine, a supporting base, a uide-plate for the main carriage, and a sli e-way for the work-carryin carriage supported thereon at less than a rig t angle to each other a screw supported in bearings parallel to the guideplate, a main carriage fitted to the guideplate, means for connecting the carriage to the screw to be moved forward thereby, a feed-arm rotatably adjustable on the carriage, and means for fixin it in position; the work-carrying carriage tted to the slideway and engaging with the feed-arm to be moved forward thereby; means for clamping the work on the Work-carry ing carriage, supports for the tool carriage, the tool carriage, carrying the tool, fitted thereto; means for rotating the screw to move forward the feedarm and work, meansv for moving the tool carriage across the work to make the graduation marks, andv means for rockin the tool out of the path of thework on t e return stroke.

7. In combination in a raduating machine, a base, an elevated gui e-plate secured thereto, a depressed slide-way arranged thereon at less than a ri ht angle thereto, an operating screw carrie in journals on the guideplate 4and parallel thereto, a main carriage tted to the guide-plate formed with an aperture for the passage of the screw and with. means for engaging it therewith, a feedarm 'adjustably carried on the main carriage;

a feed-carriage and a work-carriage fitted to move on the slide-way, means for gonnecting the two latter carriages, a tool carriage guidesl1 e-way, a tool-carriage carrying the tool fitted thereto, means 'for reci rocating the tool across the work to make t 1e graduation marks, and means for rocking the tool out of the path of the work on the return stroke.

8. In a graduating machine, feed-arm mechanism to move the work having in combination a suitable base, a guidelate secured thereon, a screw journaled ont 1e guideplate and parallel thereto, a carriage fitted to move on the guide-plate and means for throwing it into engagement with the screw to be moved thereby; a segment journaled on the carriage and adjustable in a horizontal plane, a feed-arm integral with the segment, a guide roller piece adjustably secured on the segment and provided with a roller to engage in a longitudinal slot in the guide-plaate, means for fixing the guide roller piece in position; a diminishing graduation piece adjustable on the segment having one end adapted.

to engage with the flexible guide-istrip, means for fixing the diminishing graduation piece in position on the segment; a supporting-plate adjustably supported on the base adjacent to the guide-plate, means for adjusting said supporting-plate angularly with relation to the screw, a flexible guide-strip supported thereon; adjusting screws carrying said guide-strip and adapted to adjust different points thereof according to test points.

9. In a graduating machine, a tool carriage mechanism for operating the tool-carriage substantially at a right angle to the path of the Work to make the graduation marks having in combination a shaft, an eccentric thereon, an eccentric rod provided with a collar fitted to the eccentric, a vbellcrank suitably journaled Vhaving one arm connected to said eccentric rod, and a connecting-rod adjustably connected to the toolcarriage and to the other arm of said bellcrank.

10. In a graduating machine, a tool carriage mechanism for operatin the tool-carriage substantially at right ang es to the path of the work to make the graduation marks having in combination a shaft, an eccentric thereon, a collar tted thereto, an eccentric rod secured to the collar, a bell-crank suitably journaled connected to said rod by one arm and having a guide-way formed in its opposite arm, a block-fitted to said guideway and adjustable therein, and a connectingrod ,of variable length connected to said block and to the tool carriage.

for supporting and operating the graduating tool having in combination the base, suitable guides thereon arranged substantially at right' angles to the path of the work, a tool carriage fitted to said guides, a tool post pivota ly supported between ears on the carriage having an upwardly extending post provided with set-screws for the tool, and a lower portion downwardly depending through a slot in the carriage, a shaft, an eccentric thereon, a collar and integral eccentric rod fitted to the eccentric, a bell-crank journaled to one end of a cut-length lever and having one arm connected to the eccentric lever, and its other arm formed with a slide-way, a block adjustable in said slideway, and havin 'a set-screw, a connectingrod of adjustable length connected to the block and to the tool carriage.

12. In a graduating machine, mechanism for operating the tool-carriage substantially at right Iangles to the wori to mark the graduations, having in combination a main shaft, an eccentric thereon, an eccentric rod operated thereby, a bell-crank suitably journaled having one arm connected to said eccentric rod, a tool-carriage suitably supported, and a connecting arm connectinfr the tool-carriage to the o posite arm of thebbellcrank, a cam-wheelp shaft, a cam-Wheel thereon having cams radially adjustable, said cam-wheel being sup )orted to swing the bell-crank andl to control the extent of the movement of the tool-carriage, connections between main shaft and cam-wheel shaft, and means for rotating main shaft.

13. In a graduating machine, mechanism for supporting and operating the graduating tool having in combination the base, suitable guides thereon arranged substantially at right angles to the path of the work; a toolcarriage fitted to said guides, a tool-post pivotally supported between ears on the carriage havlng an upwardly extending portion provided with set-screws for the tool, and a ower portion downwardly depending through a slot 1n the carriage; a main shaft, an eccentric thereon, a. collar and an integral eccentric rod fitted to the eccentric a bell-crank journaled to one end of .a cut-length lever and having one arm connected to the eccentric rod and its other arm formed with a slide-way, a block adjustable in said slide-way and having a screw-stem fitted thereto, a connectingbar attached to the work-carriage and adjustably connected to said screw-stern; a cam-wheel shaft, a cam-Wheel thereon, slots in said cam-wheel and cams radially adjustable therein; the .cut-length lever journaled and carrying the bell-crank, means for holding said cut-length lever in engagement with said cam-wheel and cams, connections between main shaft and cam-wheel shaft, and means for operating main shaft.

14. In a graduating machine, mechanism for operating the tool-carriage and the tool, havlng in combination a main shaft, an eccentric thereon, an eccentric rod operated thereby, a suitably journaled bell-crank having its upper arm connected to said eccentric rod, and its lower arm connected by connecting arm to the tool-carriage, a cam-Wheel shaft, a cam-wheel thereon carrying radially adjustable cams, intermediate mechanism for controlling bell-crank by its periphery and cams, and means for varying the rotation of the cam-wheel shaft with reference to the main shaft to control the length and position of the graduation marks.

15. In a graduating machine, mechanism for operating the tool-carriage having in comblnation a main shaft, an eccentric thereon, an eccentric rod arm having a collar fitted to the eccentric, a cut-length lever suitably j ournaled, a bell-crank journaled on said cut-length Alever and having one arm connected to the eccentric rod, a connectingrod connecting the other arm of the bel crank to the tool carriage,.a counter-shaft connected to the main shaft, pinions of varying sizes thereon, means for shifting one pinion or the other into engagement with its correspondin gear to control the rotation of the cam-whee said cam-wheel on the cam shaft in peripheral engagement with the cut-length lever, and camsradially adjustable on said cam-wheel to vary the movement of the tool-.carriage and the length of the graduation marks.

` 16. In a graduating machine, mechanism for operating the tool-carriage having in combination a main shaft, an eccentric thererotating the main shaft, gears connecting it to the counter-shaft pinions of varying size adjustably carried on the counter-shalt, a cam-wheel shaft parallel to the counter-shaft, gears of varying size on the counter-shaft reverscly arranged with reference to said pinions with which they are respectively adapt-- ed to engage a cam-wheelon the cam-wheel shaft, camsV radiallyr adjustable on the camwheel to engage with the upper end of the cut-length lever periodically to control the length and positionol' the graduation marks.

17. In a graduating machine,-mechanism for rocking. the tool-post periodically to move the tool out of the path of the work, having in combination a main shaft, a' cam thereon, means for rotating the shaft, a cam rod controlled by the cam, a rock-arm pivotally connected to said cani rod, a rockingpiece at one end pivotally connected to the rock-arm and at its opposite end adjustably supported on the rock-arm, the tool-carriage suitably supported, and the tool-post ivotally supported on the tool-carriage an Qonnected tothe rocking-piece between its ends.

18. In a graduating machine, mechanism for rocking the tool.- ost periodically to move the tool out of t e path of the work having in combination a main shaft, a cam thereon, a cam rod elevated and depressed by said cam, a rock-arm pivotally connected to the lower end of the cam rod and having a forked end, an intermediate block on said rock-arm, an adjustable screw in -said block, a handle journaled in the forked end of the rock-arm having the side-plates of its upper forked end connected by a bolt, notched bushing on the bolt, a rocking-piece pivotally `connected at its rear end to a hanger, said hanger being elevated and depressed by the adjustable screw, and the rocking-piece rovided with an integral collar fitting said bushing and having an elongated notch, a spring connected to the tool-carriage and having a nose extending through said elongated notch to enga e withone of the bushing notches, the too -carriage suitably supported and having a central opening, the tool-post pivotally supported between ears on said tool-carriage and having a lower end depending through said opening, and means for connecting said lower end to the middle portion of the rocking-piece.

19. In a graduating machine, mechanism for regulating the length and position of the graduating marks havin in combination a base, a tool carriage slida ly arranged thereon, a tool holder plvotally carried on the tool carriage, a main shaft, connections Vbetween the main shaft and the tool carriage to reciprocate the carriage, of means lntermediately arranged to periodically'give an accelerating movement to the carriage, both forwardly and rearwardly, means for timing said`accelerating movement, a tool in the tool-holder, and means to rock the tool into and out of engagement with the sto-ck.

20. In a graduating machine, mechanism.

for regulating the length and osition of graduation marks, having in com ination, a main shaft, a cam wheel shaft, connections between sald shafts, a cam-wheel on the camshaft, adjustable cams on the cam-wheel, means to secure the cams in adjustable position, a tool-carria e, a tool holder, pivotally carried on the too -carria e, a cut-length lever suitably supported, a ell crank hung on one arm of said cut-length-lever, a roller on the other arm, said roller engaging the cams,

connections between the be -crank and the tool-holder, connections between the bellcrank and the main shaft whereby the bellcrankis rocked, a spring suitably arranged to hold the rock-lever in engagement with the cams.

'21. In a graduating machine having in combination, a base, a work carriage arranged on the base, means for advancing the carriageperiodically, means for governing the distance of each advance movement, means for securing the work on the work carriage, a tool carriage at right angles to the work-carriage, a tool carried on the tool-carriage, means to oscillate the tool-carriage, means for 'regulating said oscillations, means to rock the tool out of en agement with the work on the return stro e and means to throw the tool in and out of operative position.

22. In a graduating machine means for operating the feed arm having in combination a suitab e base, a guide plate, an elongated operating screw journaledthereon, .a coupling piece secured to the screw at one end and having a beveled face, a ixed nut, suitably arranged, having a reversely beveled face adapted to engage with the coupling piece during the rotation of the screw, means for rotating the coupling piece, a main carriage fitted to the guide plate and to the screw, means for s ecurin the carriage to the screw tobe operated thereby, a bell-crank-lever journaled on the carriage, a segment ivoted on one arm of the bell-lever, an e onated feed-arm integral with the segment, a exible guide-strip, a roller on the bell-crank en aging the guide strip, means to secure the be-lever to the carria e, integral slotted arms on one side of the frame, a supportin late adjustably secured thereto, lntegra gearin s on this supporting plate, and adustab e guide strip supports carried in the earings. j

In testimony whereof, I have hereunto signed my name.

ADOLPI-I GEIGER. [L.l s.]

Witn

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