US638205A - Grinding-machine for cutlery. - Google Patents

Description

2 Sheets-Sheet I INVENTORQY mmmmww i 7 I BYj I Patented Nov. 28, I899.

T. J. TELLEFSEN. GRINDING MACHINE FOR CUTLEBY.

(Application filed Oct. 20, 1898.}

ATTORNEYS.

In: "ohms PETERS co.. Pnoroumo WASHINGTON. u. c

Patnted Nov. 28, I899.

T. J.-TELLEFSEN.

GRINDING MACHINE FUR CUTLEBY.

(Application filed Oct. 20, 1898.)

2 Sheets-Sheet 2.

(No Model.)

WITNESSES: IINVENTOR I l ivwamofimwull7wmf-sz@ MM.W

ATTORNEYS.

"m: uonms PEIERS 110., Pnoraunia. WASHINGTON. n. c..

llnrrn THEODORE J. TELLEFSEN, OF NEl/VARK, NEW JERSEY, ASSIGNOR TO ALFRED F. BANNISTER, OF SAME PLACE.

GRlNDlNG-MACH|NE FOR CUTLERY.

SPECIFICATION forming part of Letters Patent No. 638,205, dated November 28, 1899. Application filed October 20, 1898. Serial No. 694,073. (No model.)

To all whom it may concern.-

Be it known that I, THEODORE J. TELLEF- SEN, a citizen of the United States, residing at Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Grinding-Machines for Cutlery and other Articles; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being bad to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

This invention relates to certain improvements in that class of grinding-machines for cutlery and similar articles represented by the machine illustrated in the prior patent, No. 543,076, issued July 23, 1895.

The objects of the present improvements are to simplify the construction and render the machine more convenient for the attendant.

The invention consists in the improved machines for grinding cutlery and similar arti-' cles and in the arrangements and combinations of parts of the same, all substantially as will be hereinafter set forth, and finally embraced in the clauses of the claim.

Referring to the accompanying drawings, in which like letters of reference indicate corresponding parts in each of the views, Figure 1 is a front elevation of a portion of a grinding-machine having my improvements. Fig. 2 is a side or end view of the same. Fig. 3 is a detail showing a certain worm-wheel having clutch devices attached adapted to he automatically operated to effect a break in the train or connection of certain power-transmit ting devices; and Fig. 4 is a section of the same, taken on line 00. Fig. 5 is a detail of a certaintrip device in connection with a gearwheel (1 and cooperating parts, and Fig. 6 is a section of the same on line y..

In said drawings, a indicates the frame of the machine, on which is an oscillating workholder 1), adapted to present the knife or artiole to be ground to the grinding-wheel (not shown) in the manner fully described in the Patent No. 543,076 above referred to. Said work-holder b is given its slow'oscillating movement by a connecting-rod c and a wheel d, the said connecting-rod 0 being connected eccentrically to the wheel 61 by means of a crank-pin (Z or in any suitable manner.

Power is transmitted to the gear-wheel cl from the pulley e and shaft f by means of a worm g, which last effects a slow motion of the gear-wheeld and the parts 0 b in train therewith. Said worm is loose to rotate on the shaft except when clutched. At one end of the worm g I have formed clutch-fingers 9, adapted to be engaged by a sliding clutch member h upon the shaft f, which shaft is provided with a feather '6 to prevent independent turning of said clutch member on 'said shaft. Said sliding clutch member is held in clutching relation to the worm by a catch j on the frame, which catch engages a cooperating catch 7' Fig. 3, on or in connection with the clutch member h. To effect a sliding of the clutch member h to and from engagement with the worm,.I have preferably formed a peripheral groove around said clutch member and in the same have arranged a collar 7c, which at one side is provided with a hub or box is and at the opposite side is furnished with the codperating catchj above referred to. The clutch memher It is loose to turn freely in said collar 70. Said collar at the hub or box is fixed to a shaft or rod l, arranged in bearings m m of the frame a, said rod sliding longitudinally in said bearings to efiect the desired movements of the clutch member 71, connected therewith. Said shaft Z is in turn operated by a hand-lever n and a spring 0, the former being fulcrumed, as at 19, upon the frame a, and linked or coupled, as at n, to the shaft 0 or rod Z, whereby the operator or attendant maythrow theshaftZlongitudinallyinitsbearings and the clutch member it into clutched relation to the clutch-fingers g of the worm. The spring 0 is disposed at the opposite end 5 of the rod or shaft Z from the hand-lever between a stop-bearing 0' and one of the bearings 'm and normally tends to throw the clutch members out of clutched relation when the sliding clutch member is released from the catch.

The clutch-catchj is of a lever-like construction and fulcrumed atj upon the frame at a point contiguous to the clutch members. It is provided with a catch-fingerj and a trip fingerj and is normally held by a spring 0 in position to cause the trip-finger to engage the cooperating catch 7' of the clutch memher when forced into clutched relation by the lever and hold said clutch member in such relation. The trip arm or fingerj of the lever-like catchj extends into the path of a trip mechanism arranged upon the wheel (1 and is engaged by said trip mechanism and thrown thereby out of catching relation to permit the spring 0 to act automatically to release the clutch members.

The trip mechanism is arranged at one side of the wheel 61, near the periphery thereof, and comprises, preferably, a brackets, having an irregular rib s projecting out from the side of the wheel, which rib is perforated and threaded to receive a limiting-screw 5 Near its other end said rib is curved to form a socket s for a pivotal trip-pawl 5 said trippawl being centered on a pivot or pin 8 and bearing at its inner end on the curved walls of said socket. The movement of said trippawl is limited in said socket in one direction by the limiting-screw and in the opposite direction by the extension 3 of the rib. Said pawl projects at the end opposite that lying in the socket toward the periphery of the wheel d and impinges on the fingerj so as to throw the catch j out of catching relation to the clutch-catchj. A spring 6 holds the trip-pawl normally against the limiting extension of the rib and in position to trip the catch With an elastic pressure, all as more fully described and claimed in a cotemporaneous case filed October 19, 1898, Serial No. 694,049.

Having thus described the invention, what I claim as new is- 1. The combination in a grinding-machine for cutlery, of the frame a, oscillating Workholder Z), connecting-rod c, and gear-wheel cl, eccentric crank-pin, a pulley e, and shaft f, carrying a worm g, loose on said shaft, said worm at one end having clutch-fingers g, a sliding clutch member 7t, also arranged upon said shaft, a feather i, to prevent independent rotation of the said clutch member, a catch j, on the frame, a cooperating catch 7' in operative connection with the clutch member,the latter being held thereby into clutched relation to the worm, means for automatically disengaging the catches and throwing the clutch'member out of operative contact and means for throwing said members into engagement, substantially as set forth.

2. The combination,inagrinding-machine, of the frame a, oscillating work-holder Z), connecting-rod o, and gear-wheel d, an eccentric connectionof said gear-wheel and rod, a pulley e, and shaft f, carrying a worm g, loose on said shaft, said worm providing at one end clutching means, a sliding clutch member also arranged on said shaft and adapted to clutch with the worm, a catch holding said sliding clutch in sliding engagement, means arranged on said gear-Wheel to release said catch from the clutch, and means for throwing the sliding clutch member into clutching relation, substantially as set forth.

3. The combination, in a grinding-machine, of the frame a, oscillating work-holder, a conmeeting-rod for oscillating said holder, a gearwheel eccentrically connected to said rod, said gear-wheel having the eccentric connections and meshing with a worm-wheel, said Wormwheel being arranged on a shaft contiguous to said gear-wheel, and having a clutch member, said shaft, a second clutch member adapted to engage the first and give rotary motion thereto, means for rotating said second clutch member and causing an operative engagement thereof with the first, and a spring for automatically disengaging the clutch members, substantially as set forth.

4. The combination in a grinding-machine, of a frame a, an oscillating work-holder, a connecting-rod for oscillating said holder, a gearwheel eccentrically connected to said connecting-rod, a worm-Wheel having a clutch member, a shaft carrying said Worm-Wheel, powerwheel 6, and a sliding clutch member, said sliding clutch member having a peripheral groove to receive a catch-collar 71;, a shaft Z, for moving said collar lengthwise of the shaft first referred to, means for moving said shaft l, lengthwise, a catch engaging the catch of the collarand holding the clutch members in engagement and a trip device in connection with the gear-wheel for releasing the catches,

substantially as set forth.

5. The combination in a grin ding-machine, with the gear-Wheel, (1, thereof, of a shaft f, for transmitting power to the operative parts, a worm-Wheel on said shaft and meshing with said gear-wheel and having a clutch at one end, a sliding catch and clutch and means for sliding and holding the clutch into clutching engagement, trip means for releasing the catches and a spring for disengaging the clutch members automatically when the catches are released,substantially as set forth.

6. In a grinding-machine, the combination with the gear-wheel d, having a trip device,

IIO

of a shaft f, Worm-wheel d, clutch members g, 7b, a catch in connection with the clutch member h, a cooperating catch adapted to be engaged by the trip device, a spring 0, and means for clutching the clutch members, substantially as set forth.

7. In a grinding-machine, the combination with the gear-Wheel d, having a trip device near its periphery, of a shaft f, Worm-Wheel g, clutch members and power wheel or pulley arranged on said shaft, a catch in connection with the loose clutch member, a catch to en gage the one on the loose clutch member, and

In testimony that I claim the foregoing I have hereunto set my hand this 8th day of 10 September, 1898.

THEODORE J. TELLEFSEYN.

Witnesses:

CHARLES H. PELL, PETER S. STERNSTRUP.

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