US1065021A - Clutch. - Google Patents

Description

F. G. BATGHELOR.

CLUTCH.

APPLIOATIOH FILED OUT. 7, 1910.

Patented June 17,1913.

3 SHEETS-SHEET 1.

m L w a NM x, L w\ P; w H my l. w Q r fiw EC 1 1 w ax I\ Jr l %N Q I Q m- I I i|%! k a l E WM 5 I m Al N w W HE NN W Go P. G. BATCHELOR.

CLUTCH.

APPLICATION FILED OCT. 7, 1910.

Patented June 17, 1913.

3 SHEETS-SHEET 2.

mv rm 7% w, k m

. m &

P. G. BATCHELOR.

CLUTCH.

APPLIOATION FILED 001'. 7, 1910.

1,065,021 Patented June'17, 1913.

3 SHEETS-SHEET 3- WITHEEEEE: I 7 J3M COLUMBIA PLANOGRAPH co. WASHINGTON. D. c.

barre FENNIMOREG. BATCHELOR, OF NEW BEDFORD, MASSACHUSETTS, TO TWIST DRILL & MACHINE COMPANY, OF NEW BEDFORD, MASSACHUSETTS, A COR- PORATION OF MASSACHUSETTS.

CLUTCH.

Specification of Letters Patent.

Patented June 17, 1913.

T 0 all whom 2'25 may concern:

Be it known that I, FnNNIMoRn G. Baron- ELOR, a citizen of the United States, and a resident of New Bedford, in the county of Bristol and State of Massachusetts, have invented a new and useful Improvement in Clutches, of which the following is a specification.

In metal-working machinery such as grinding machines, 850., it is often desirable to work up to a shoulder or projection, and in order that the work may be turned or ground to a uniform diameter throughout its length, it has been proposed to provide mechanism for securing a delayed reversal of the reciprocating work-carrying member or else the reciprocating tool-carrying member, so that at the end of the traverse of said reciprocating member there is no relative longitudinal movement between the work and cutting tool for a relatively short space of time. However, in machines provided with such delayed reversal mechanism, considerable time is lost when the work is of uniform diameter throughout, unless means are provided for rendering such delayed reversal mechanism inefiective and thereby securing immediate reversal at the will of the operator.

Accordingly it is the object of the present invention to provide a manually-operated convertible positive or lost-motion clutch for metal-working machines having delayed reversal mechanism, whereby such mechanism may be rendered ineffective and immediate reversal secured at will.

One embodiment of my invention is illustrated in the drawings which accompany and form a part of this specification, in which Figure 1 is a plan view of a portion of a grinding machine, Fig. 2 is a section taken on the line 2-2 of Fig. 1; Fig. 3 is a section taken on the line 33 of Fig. 2; Fig. 4L is a section taken on the line 4 a of Fig. 2; Fig. 5 is a plan view of a portion of the shaft 1. Fig. 6 is a section on line 66 of Fig. 1. Fig. 7 is a section taken on the line 7-7 of Fig. 1, some of the parts being shown in elevation illustrating an old and well known type of carriage in operative relation to a cutting tool. Fig. 8 is a plan showing an old and well known type of reversing mechanism for the drive shaft.

In the particular drawings selected for illustrating my invention, 1 is a shaft suitably journaled in the bed-plate and connected with any suitable reversing mechanism whereby relative reciprocating motion is created between the work-carrying member and the tool-carrying member.

In the present instance the reversing mechanism illustrated for the purpose of more fully disclosing my invention is of a well known type old in the art and shown for example in the patent to Norton 453,022, dated May 26, 1891, and fully described therein. The clutch-shaft F suitably journaled and carrying the usual cone-pulley F carries loosely mounted sleeves provided at their inner ends with clutches b b and at their outer end with the beveled gears 6 Splined to the clutch-shaft is the double clutch b capable of cooperating with either of the clutch members Z) and adapted by mechanism well understood by those skilled in the art to be moved out of cooperation with one of said clutch members and into cooperation with the other at the end of each traverse of the carriage. The beveled gear G is secured to the drive shaft and meshes with the beveled gears 6 For further information concerning this reversing mechanism, which is only one of many that may be employed and all of which are well 1111- derstood by those skilled in the art and to which, by the way, I make no claim, refer ence may be had to the Norton patent afore said. In some cases the work moves longig tudinally with respect to the cutting tool, such as a grinding wheel, and in others the tool moves longitudinally with respect to the work. It will be obvious that my improvement is capable of application to either of these classes of machine. In the present case I have represented my improvement as applied to a machine in which the work moves longitudinally with respect to the cut ting tool. I

The clutch member 2 of the convertible positive or lost motion clutch is secured in any suitable manner to the shaft 1-, as for example by the pin 3 and key 4, and is provided with a tooth 5 arranged to cooperate with the tooth 7 of the sleeve 6. The sleeve 6 carries the pinion 8 and the latter meshes with the gear 9 which is connected with the pinion l0 cooperating with the rack 11 se cured to a part of the carriage 12, namely, an upwardly-extending flange, to which the carriage proper B may be secured in any suitable manner as by the screws 12. The

carriage supports either the tool-holder or the head and tail stocks in which the work is held according to the nature of the machine. In the present instance for the purpose of more fully disclosing my invention, I have shown an old and well known arrangement of reciprocating table or carriage B carrying the head and tail stocks, one of which is shown at C, so that the work may be reciprocated past the cutting tool herein shown as the grinding wheel D. The arrangement of carriage and cutting tool shown in Fig. 7 is well known in the art and has been fully described, for example, in the patent to Norton above referred to, so that I make no claim to the same. The sleeve 6 is attached to the hub 13 of the gear 1 1 and the latter meshes with the pinion 15 connected with the hand-wheel 16, so that the carriage may be manually moved if desired.

It will be obvious that as the shaft 1 is reversed the tooth 5 will be thrown out of engagement with the tooth 7 for an interval of time equal to that required for about three-fourths of a revolution of said shaft, so that during this interval there is no relative longitudinal movement between the work and the cutting tool, that is to say, the table or carriage is given a dwell at the end of each stroke. My improvement whereby Said delayed reversal mechanism may be employed at will consists broadly in manually-operated means whereby the drive-shaft 1 may be positively connected with the gear 8 without reference to the clutch teeth 5, 7. While a number of ways of accomplishing this result will suggest themselves to those skilled in the art, I shall describe specifically one simple mechanism which will answer the purpose, although it will be understood that the particular mechanism described for the purpose of more fully disclosing my invention may be subjected to a wide range of variation without departing from the spirit of said invention.

The socket 17 which is set into the hollow gear 14 and suitably secured thereto, is bored to receive the shaft 1, and the outer portion of said bore is provided with one or more pairs of notches 18, 18. Back of the notched portion the bore is enlarged, as shown at 30, the open space so formed havtrolling lever 23 engages the notch of said spool. The arm 23 is pivoted as at 2& to some suitable part of the frame of the machine and may be provided with a handle 25. The shaft 1 is notched throughout a portion of its length, as shown at 29, and is bored as shown by thedotted lines 26 in Fig. 5, to receive the rod 19. A flat key 27 passing through the slot 29, is secured to the inner end of the rod 19 in any suitable manner, as for example by the pin 28 and is so arranged that when the handle 25 and rod 19 are in the position shown, it engages one of the pairs of notches in the socket 17, thereby locking the shaft 1 with the gears 14 and 8. In this manner the automatic mechanism for effecting the delayed reversal is rendered ineffective and immediate reversal is secured at each end of the carriage traverse, because the communication of motion from the shaft 1 to said gears no longer depends upon the clutch teeth 5, 7. However, when the handle 25 is pulled away from the machine, thereby forcing the key 27 out of its cooperating slots and into the open space 30, the shaft 1 is no longer locked in engagement with the gears 14 and 8 and the delayed reversal mechanism now becomes effective. In order to strengthen the slotted end of the shaft 1, the latter may be cut away as shown at 31 and provided with the steel cap 32.

I claim:

In combination, a reversibly rotatable drive-shaft bored at its outer end, a reciprocatory member, means for transmitting motion from said drive-shaft to said member, said means comprising a gear and a lostmotion clutch having its members secured to said gear and shaft, respectively, a rod in the bore of said drive-shaft, a manuallyoperated lever arranged to move said rod longitudinally in said bore and means secured to said rod for locking said driveshaft to said gear.

In testimony whereof, I have hereunto subscribed. my name this tth day of October 1910.

FENNIMORE G. BATOHELOR.

Witnesses:

G. E. MONDELL, W. M. GLADDING.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Latents, Washington, I). G.

Images