US426925A - Mechanical tracing-pen - Google Patents

Description

(No Model.) .4 Sheets-Sheet 1.

E. H. GRAIGE'; MEGHANIGAL TRAGING PEN.

No. 426.925. Patented Apr. 29, 1890.

WITNESSES: 1 l/VI/E/VTOI? mArmR/ms (No Model.) 4Sheets-Sheet 2.

' E. H. ORAIGE.

MECHANICAL TRAGING'PEN.

No. 426,925. Patented Apr. 29, 1890.

hi; ATTORNEYS (No Model.) 4 Sheets-Sheet 3-.

E. H. ORAIGE. MECHANICAL TRAGING PEN.

No; 426,925. Patented Apr. 29. 1890.

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(No Model.) v 4 SheetsSheet 4. E. H. GRAIGE.

I MECHANICAL TBAGING PEN- No. 426,925. Patented Apr. 29, 1890.

is? i his mom "UNITED STATES PATENT FFICE.

' EDWARD H. ORAIGE, OF BROOKLYN, NE\V YORK.

MECHANICAL TRAClNG-PEN.

SPECIFICATION forming part of Letters Patent No. 426,925, dated April 29, 1890.

' Application filed June 6, 1889. Serial No. 313,354. (No model.)

To all whom, it may concern.-

Be it known that I, EDWARD H. CRAIGE, a citizen of the United States, residing at Brooklyn, in the county of Kings and State of New York, have invented new and useful Improvements in Mechanical Tracing-Pens, of which the following is a specification.

My invention has for its object to enable the operator to guide the tracing-pen and to give him complete control of the mechanism employed.

The peculiar and novel construction of this mechanism is pointed out in the following specification and claims, and illustrated in the accompanying drawings, in which Figure 1 represents a side elevation. Fig. 2 is a plan or top view. Fig. 3 is a longitudinal section of the casing which contains the tracing-pen detached, on a larger scale than the previous figures, the linew 00, Fig. 4, indicating the plane of section. Fig. 4 isa similar section in the plane 3 y, Fig. 3. Fig. 5 is a side view of the same. Fig. 6 is a side elevation of the parts which connect the jointed arms, on a larger scale than Figs. 1 and Fig. 7 is a vertical section of the same, the

line w as, Fig. 8, indicating the plane of section. Fig.8 is an inverted plan of the same. Fig. 9 is a horizontal section in the plane .2 .2, Fig. 7. Fig. 10 is a partial side view of the main standard and of the swivelbracket mounted in the same. Fig. 11 is a vertical section in the plane y 1 Fig. 10. Fig. 12 is a horizontal section in the planez z, Fig. 11. Fig. 13 is a similar section showing the parts in a different position. Fig. 14 is a vertical section of a modification of the parts shown in Figs. 6 to 9 inclusive, the plane of section being indicated by the line 51: 00 Fig. 15. Fig. 15 is a transverse vertical section of the same in the plane 11 2 Fig. 14. Fig. 16 is a sectional side .view of another modification drawings it is secured to a table B by means of a clamping-screw a. In the standard A is mounted a swivel-support '0, (best seen in Figs. 10 and 11,) which carries the shaft D.

This swivel-support turns on pivots 7) b, which are secured in arms 0 c',-projecting from the standard A. On the arms 0' is secured the adjustable stop 0 and if this stop is movedback away from the pivot b it does not interfere with the movement of the swivel-support 0; but if said stop is moved forward to the position shown in Figs. 11, 12, and 13 the revolving motion of the swivel-support is limited, as indicated in Fig. 13. The

object of this limitation will be presently explained.

The shaft D'has its hearings in a bracket E, which is fitted into a slot d in the swivelsupport, and which can be adjusted in said slot by means of a set-screw d Fig. 11. On the inner end of the shaft-D is firmly mounted the pulley (1 to which motion is imparted by means of a belt (1 Fig. 1.

If the standard A is secured to the table of a sewing-machine, the belt d will be made to extend round a pulley mounted on the crankshaft of the sewing-machine; but said belt may be passed round a pulley mounted on a line-shaft overhead or in any other suitable, posit-ion. By means of the stop 0 the revolving motion of the swivel-support O is limited, so that the pulley (1 cannot be thrown in a position in which the belt d would be liable to run off. By adjusting the bracket E in the slot (1 the proper tension of the belt d can be maintained.

The outer end of the shaftD extends through a bracket F. (Best seen in Figs. 6, 7, 8, and 9.) This bracket consists of a baseplate f and two uprights f f, between which is situated the'pulley (1 which is firmly mounted on the shaft D. The base-plate f is connected to a head G by means of a screw-pivotfZ which is tapped into the base -plate and extends through a slot g in the head G, Figs. 7 and 8, and also through a slot h in the stop H. In the example shown in Figs. 6, 7, 8, and 9 this stop extends into a cavity f in the bottom of the base-plate f, and through the sides of said base-plate extend two set-screws f (best seen in Fig. 9,) which limit the movement of the stop H, and consequently the movement of the head G round the screwpivot f Between the tail h of the stop H and a shoulder gof the head G is placed a spiral spring g through which extends a rod g, which is secured in the head G and extends freely through the tail h of the stop II. The spring g has a tendency to throw the head G out in the direction of arrow 1, Figs. (5, 7, and 8, and the rod is provided with a head 9, which limits the movement of the head G.

From the head G extends a red I, which carries the casingJ of the tracing-pen K, Figs.

3, a, and 5. The casing J forms the bearings f or a shaft j, on which is mounted a pulley j, which connects by a beltj with the pulley (Z 011 the shaft D; and in order to prevent this belt from running off from its pulleys the revolving motion of the head G round the setscrew j is limited by the stop II. The proper lension of thebeltj is preserved by the spring \Vhen it is desired to pack up the machine for transportation or otherwise, the belt 7 is thrown off from the pulleys (Z and the head G is drawn out, so as to throw the stop ll backward into the enlarged portion of the cavity f in the base plate F, Fig. 9. The head G can then be turned, so as to bring the red I alongside of the shaft 1), or nearly so.

On the shaft 7' in the casing J is mounted an eccentricj', round which passes a strap j", and from this strap extends a rod 71",, which carries the tracing-pen K. On the tracingpen K is secured the sleeve which extends loosely through the guide-openingj, formed in the lower end of the casing J, so as not to interfere with the rocking motion imparted to the rod 70 by the eccentricj". If the sleeve 7t has worn oil, it can be replaced by another without renewing the rod A. By these means there is only a single bearing between the rod 76 and the casing J, so that the friction between the operative parts is reduced.

On the casing J is secured a bracket j, which carries the foot-piece L, said bracket being provided with an internal screw-thread which engages the upper threaded portion of the stem of the foot-piece, so that the position of the tracing-pen in regard to the work can be adjusted.

In the exampleshown in Figs. (5, 7, 8, and 9 the stop II is secured to the head G; but said stop may be attached to the bracket F, either in the manner shown in Figs. 14 and 15 or in the manner shown in Fig. 16. In the example shown in Figs. lland 15 the stopll is hinged to the base-plate f of the bracket F. If the stop occupies the position shown in full lines in Fig. 14, its nose 72. engages a recess g in the head G, which is wide enough (see Fig. 15) to allow the head or the bracket F to turn the required distance in either direction; but if the stop II is turned to the position shown in dotted lines in Fig. 1i the head G can be turned so as to bring the rod I in line, or nearly so, with the shaft D.

In the example shown in Fig. 16 the bracket F is in a horizontal position, and the stop II is hinged to the extension f", so that its nose h engages a recess 9 in the head, said recess being of sufficient width to permit the re quired freedom of motion.

If the stop H is raised, the rod I can be swung round to the required posit-ion for .packing.

\VhatI claim as new, and desire to secure by Letters Patent, is-

1. In mechanism for producing and controlling the movements of a mechanical tracing-pen, the combination, with the standard A, of the swivel-support O,the bracket E, secured in the swivel-support,the shaft D, mounted in said bracket, the pulleys (1 d and the bracket F, mounted on this shaft, the head G, secured to the bracket F by a pivotf the rod I, extending from said head, the casing J, secured to the rod 1, the tracing-pen K, contained in said casing, the shaft j, journaled in the casing, the pulley 7, mounted on this shaft, and mechanism, substant-ially as described, for imparting to the tracing-pen a rising and falling motion.

2. The combination, with the standard A, of the swivel-support C, mounted in said standard, the bracket E, fitted to the swivelsupport and made adjustable on the same, the shaft D, mounted in the bracket, the pulleys (Z (.Z", mounted on said shaft, the bracket F, head G, rod I, casing J, tracingpen K, shaftj, pulley j, and mechanism, substantially as described, for imparting to the tracing'pen a rising and falling motion.

The combination, with the standard A, the swivel-support O, the bracket E, the shaft I), and the pulley (P, of the stop 0 substantially as and for the purpose described.

4. The combination, with the standard A, the swivel-sup1:)ort G, the bracket E, the shaft D, the pulleys (Z d, the standard F, the head G, connected to the standard by the pivot/ the rod I, and tracing-pen K, carried by said rod, of; the stop II,substantiallyas described.

5. The combination of the casing J, having the guide-bearing at its lower end, the tracing-pen K, and the sleeve 7.2, secured to the tracing-pen and loosely fitting in the guidebearing, with the rod 75, the strap j, the eccentric 7 and the shaftj,substantially as de scribed.

6. The combination of the bracket F, carrying the pulley (l and the slotted head G, pivoted against and sliding on the bracket and provided with a stop ll, with the rod I, the casing J, the shaft j, the pulley 7", and the spring g acting against the stop and the head to slide the latter on the bracket carrying the pulley, substantially as described.

In testimony whereof I have hereunto set my hand and seal in the presence of two subscribing witnesses.

EDNVARD ll. CRAIGE.

\Vitnesscs:

J. VAN SANTVOORD, W. IIA'UFF.

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