US2431939A - Abrading machine - Google Patents

Description

F. D. JOHNSON 2,431,939

ABRADING. MACHINE Filed Aug. 11, 1945 ating in the hub and Patented Dec. 2, 1947 UNITED STATES PATENT OFFICE ABRADING MACHINE Franklin D. Johnson, Battle Creek, Mich. Application August 11, 1945, Serial No. 610,221 4 Claims. (01. 51 -128) This invention relates to a device for sharpening and polishing cutlery and has for an object to provide means for sharpening knives and the like and means whereby the same may be polished.

Another object of the invention is to provide an abrader and means for mechanically holdin cutlery to be sharpened against the same.

A further object of the invention is to provide means whereby a plurality of knives or the like may be sharpened at one time.

A still further object of the invention is to provide in an abrader a reciprocable cutlery holder.

Another object of my invention is to provide in a grinding machine resilient means whereby a plurality of knives or the like may be held slidably moved against an emery wheel or the like.

And another object of the invention is to provide in a machine of the above mentioned character means for driving a polishing brush or the like.

Other features and advantages will become more readily apparent from the following description and the accompanying illustrative drawingsin which:

Figure 1 is a vertical sectional view of my machine, a carriage being removed,

Figure 2 is a top plan view of the carriage,

Figure 3 is a side elevational view thereof, and

Figure 4 is a sectional view taken on line 4--4 of Figure 2, and

Figure 5 is a detail of her and emery wheel.

In the drawings and in the specification the same reference characters are used to indicate like parts throughout and in which It), refers to my knife sharpening machine, consisting of a frame H, which includes an elongated bearing 12, for a spindle l3, projecting at one end l4, into an oil tight housin l5, and at the other end into an oil sump I6. The wall l1, of housing I5, is provided with an extending hub I8, adapted to be fixedly attached to the shaft l9, of a sausage machine, or any other driven machine or directly to a motor shaft (not shown) as indicated at 20, by means of the head 2|, of the shaft 22, operprojecting into housing I5, as at 23, and fixedly mounted on said part 23, is a large gear wheel 24, meshed with a pinion gear 25, fixed on said end I4, of spindle l3.

Fixed on the end 26, of said spindle I3, is a large gear wheel 21, geared to a pinion 28, splined on shaft 29, supported in the bearings 30 and 3|, forming a part of the frame ll. Also splined on the ends 32 and 33, of the shaft 29, are a pair of a knife supporting memspaced emery wheels 34 and 35, having tapering outer peripheral portions 36 and 31, the purpose of which will presently be explained. The bearing members 30 and 3|, support a table 38, having slots 39 and 40, through which the emery wheels project. Projecting up from each side of each wheel are pivot pins 4|, 42 and 43 and 44, all of which are located beyond said wheelsand will be mentioned again.

vThe frame ll, includes the housing l5, with its removable wall 41, and the sump IS, with its removable wall 48. Attached to the under wall of the table 38, are housing guards 49 and 50, for the wheels 34 and 35. The extreme outer end 5|, of shaft 29, is splined and projects through an aperture 52, in the guard 56, which end is adapted to have a polishing wheel or buffer (not shown) attached thereto. A guard hood 53, is provided for said end 5|, when not in use. The frame structure II, is provided with a bracing web 54.

A knife holder 55, comprises an elongated base 56, with one end 51, tapering and provided with a bore 58, adjacent its terminal 59, the purpose of which is to engage one of the said pins 43 to 46, and its other'narrowed end 60, terminates in a downwardly inclined handle 6|. Between said reduced ends 51 and 68, the longitudinal sides of the base are turned up to provide angularly disposed flanges 62 and 63, which are rigid. Intermediate of these flanges is a vertically disposed fixed wall 64, terminating in pins 65 and 66, upon which are pivoted the Wings 61 and 68, and 69 and 16, of the longitudinal walls 1| and 12, whch are slightly spaced from the fixed flanges 62 and 63, respectively and which together form slots 13 and 14, within which knife blades 15 or 16, may be seated slidably. Springs 11 and 18, on one side and 19 and 80, on the other side are mounted between the wall 64, and said walls 1| and 12, whereby the latter walls are normally forced against said blades to press them (one at a time) against the opposite sides of one of the above referred to emery wheels bevels 36 or 31. The said wings 68, 10, etc., are provided with horizontally disposed oval slots 10', through which the pins 65 and 66, project in order to permit of slight sliding movement of the walls 1| and 12, to provide the pressure of the knife edge against the emery wheel. A stop 8|, is provided on the table, to limit the outer pivotal movement of member 56, away from either wheel 34 or 35, in order that the user of the device may not strike against the wheel not being used.

The walls 12 and 13 are provided with a series of Openings 82 and 83, etc., with struck in upper blade is then placed in the slot 13 or 14, nearest one side of one emery wheel, then the handle BI is moved toward the wheel with one hand of the operator until the desired pressure of the knife against the wheel is obtained, then with his other hand the knife is moved. forward and back against the wheel until one side edge of the, bladev is suflicicntly ground, then the knife holder is changed to the other side of the wheel, the knife changed to the opposite slot and the operation repeated. It is obvious that two operators may use the device at one and the same time.

It is thought that persons skilled in the art to which the invention relates will be able to obtain a clear understanding of the invention after considering the description in connection with the drawings. Therefore, a more lengthy description is regarded as unnecessary.

Changes in shape, size and. rearrangement of details and parts such as come within the pur- View of the invention claimed may be resorted to, in actual practice, if desired.

Having now described my invention, that which I claim as. new and desire to procure by Letters Patent is:

1'. An abrading machine comprising in combination, a framework forming a housing and a table on said housing, said table being provided with a plurality of openings, 2. driving shaft and a driven shaft rotatably journaled in. saidhousing, step-up gearing operativelyconnecting said shafts, a plurality of abrading wheels mounted on said driven shaft, and each protruding through one of said openings, a plurality of upstanding pins on said table, and av knife holder,- saidholder comprising a, U-shaped channel provided with an eye at. one end thereof and forming a handle at its remaining end, anv upstanding 'n'biintennediately the sides of said channel, amovable wall between each of said sides and said rib; compres:-- sion springs between said rib and each of said walls, and a plurality of rollers rotatably mount..- edon, each of said walls, the knife; being; slidably receivable betweensaid sides and said rol1ers, and said eye being removably engageable with said pins whereby saidholder and. said associatedkniie are adapted for selective coactioni with; each side of eachof said wheels.

2. An abrading machine comprising in combination, a framework forming a housing; and, atable, on said housing, said table being provided with a plurality of openings, a driven shaft r0- tatably journalled in said housing, a plurality of abrading wheels mounted on said shaft and each projecting through one of said openings, means for rotating said shaft, and a knife holder attachable to said table and comprising a U-shaped channel and a pair of spring-pressed walls positioned in said channel adjacent the sides thereof, said channels and said walls coacting to form guides adapted to receive a knife.

3. An abrading machine comprising in combination, a framework forming a housing and a table on said housing, said table being provided with a plurality of openings, a driven shaft rotatably journall-ed in said housing, a plurality of abrading wheels mounted on said shaft and each projecting through one of said openings, means forrotating said shaft, and a knife holder attachable to said table and comprising a U-shaped channel, an upstanding rib intermediate the sides of said channel, a movable wall between each of said sides and said rib, and compression springs between said riband each of said walls, said walls coacting with said channel to'form guides adapted to slidably receive a knife.

4. An abrading machine comprising in combination a framework forming a housing and a table on said housing, said table being provided'with a plurality of openings, a driven shaft rotatably journalled in said housing, a plurality of abrading wheels mounted on said shaft and each projecting through one of said openings, means for rotating said shaft, and a knife holder comprising a U-shaped channel adapted at one end thereof for removable attachment to said table and forming a handle at its remaining end, an upstanding ribintermediate the sides of said channel, a movable wall between each of said sides and said rib, compression springs between said rib and each of said walls, and a plurality ofrollers rotatably mounted on each of said walls, said sides and said rollers constituting guides adapted toslidablyreceive a knife.

FRANKLIN D. JOHNSON.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date,

433,054 Sweet July 29, 1890 961,554 Sweet June 14, 1910 1,162,304; Neuens- Nov. 30, 1915- 1,726,571 Kelley Sept. 3, 1929 1,773,564 Witzleben. Aug. 19', 1930' 1,831,863 Irwin Nov. 17, 1931 1 895,819. Remington Jan. 31, 1933 11,963,394: Yassenofi -1 June 19, 1934 2,021,602 Jackson Nov. 19, 1935- 2,161,992 Battocchi June 13, 1939'

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