US576296A - Kneading-machine - Google Patents

Description

(N Model.)

G. IIJ. BALL.

\ KNEADING MACHINE.

l l l NTTE STATES PATENT OFFICE.

GEORGE M. BALL AND FREDERIC J. BALL, OF BROOKLYN, NFV YORK.

KNEADlNo-MACHINE.

SPECIFICATION forming part of Letters Patent No. 576,296, dated February 2, 1897.

Application filed June l2, 1896. Serial No. 595,259. (No model.)

To all whom it may concern:

Beit known that we, GEORGEM. BALL and FREDERIC J. BALL, of the city of Brooklyn, in the county of Kings `and State of New York, have invented a new and useful Improvement in Kneading-Machines, of which the following is a specication.

This invention is more especially adapted to kneading-machines of small size suitable for family use, although machines embodying the invention may be of larger capacity.

We will first describe the invention in detail with reference to the drawings of a machine embodying the improvement, and afterward point out its novelty in claims.

Figure l represents a plan view of the machine; Fig. 2, a central vertical section'of the same, and Fig. 3 a plan. of certain details which will be hereinafter explained.

`A represents a pan of circular form, in the center of which is an upright hollow conical standard B, between which and the sides of the pan is formed an annular kneading-trough C. The pan Amaybe of sheet metal and the standard B may be-of cast-iron and united with the pan in any convenient manner, as by soldering ata around the base of the standard. In the center of the crown of the standard there is'formed.at-.h the lower bearing for 'an upright center shaft D, which has also upper and lower bearings at t' and j in the top and bottom of a rotary metal box E e, which is supported upon the top of the standard B, but is loose upon both the standard and the center shaft. This boxcontains also the bearings o and d for two inclined side shafts or pivots F F, which carry rotary kneadingblades G G, of any suitable form, which are dependent from the said shafts within the trough C. On each shaft or pivot F there is fast a bevel-gear f, gearing with a bevel-gear g, fast on the center shaft D, which has applied to it means hereinafter described to prevent it from turning in the pan-standard B.

The box E is represented as having one side e made separate and attached by screws e md removable for access to the interior and t0 permit the introduction of the center and side gears ff g. The shafts DF F are represented as inserted through their respective lower bearings j d d in the box E and through the hubs of the gears, the latter being secured to the shafts by pins h, which are inserted through them and the gears, the latter fitting between the top and bottom of the box and thus holding the shafts in place lengthwise. The rotary box E has cast with or directly attached to it a hand-crank I-I, .for the purpose of turning it and carrying the kneadingblades around the pan while the latter is stationary. The gears ff, turning with the box around the gear g, while the pan, the shaft D, and the last-mentioned gear are stationary, receive a rotary motion on their own axes and so impart a rotary motion to the blades while the latter revolve around the pau. The pan may be set upon an ordinary kitchentable or any convenient support upon which it may be kept stationary by any suitable means. It is represented as provided with a lug at its bottom for the reception of a screwclamp to fasten it to the table or support.

The kneading apparatus, consisting of the box E and its contained shafts and gearing, the kneading-blades, and crank-handle, are all removable together from the pan A,which, being thus unincumbered, can be used as an ordinary mixing-pan.

The kneading apparatus when detached from the pan can be more easily washed or cleaned andinay be kept separate, while the pan may be hung up by the handle I, with which it is represented as provided.

The device which we will now describe for locking the kneading apparatus to the pan 'for use and for holding the shaft D against turning is shown in Figs. 2 and 3, the latter ligure representing an inverted plan of the pan-standard B and the shaft. This device consists of a projection lc, formed on one side of the shaft, and a downward projection 4 5, formed on and below the bottom of the center shaft-bearing b in the pan-standard B.. In one side of the bearing b, close to the end 4 of the projection 4 5, there is a groove or keyway 6 for the passage of the said projection lo through the bearing to permit the attachment and detachment of the kneading apparatus.

To attach the lineading apparatus to the pan, the gear-box E, which has the lower end of the center shaft D projecting downward through its bottom, is placed over the stand--` ard B and the shaft entered into the bearing TOO b with its projection 7c in the groove G. The gear-box being allowed to come down on the standard B, the projection 7c on the center shaft comes just below the bottom of the bearing b, and by turning the handle H, and with it the gear-box, in the direction of the arrows shown in Figs. l and 2 the center shaft is caused to turn so far with the gear-box as to bring its projection 7c under the bearing b, as shown in Fig. 2, and into contact with the end 5 of the projection 4t 5 on the bearing h, as shown in Fig. 3. The kneading apparatus is thus locked to the pan and the rotation of the center shaft and its gear g is arrested. The continued turning of the handle and the gearbox then causes the rotation of the kneading-blades on their own axes and their revolution around the pan.

Vhen it is desired to detach the kneading apparatus from the pan, it is only necessary to turn the handle backward or in the oppo site direction to the arrows represented to bring the locking projection 7o on the center shaft opposite the groove G in the bearing b, when the whole of said apparatus may be lifted from the pan.

It may be understood from the foregoing description that by the simple device, consisting of the projection k on the center shaft and the projection 4 5 on the bearing provided for the said shaft on the pan, the kneading apparatus is not only locked to the pan, but the said shaft and the center gear are held stationary for the proper operation of said apparatus, which is effected by the rotation of the Whole of said apparatus bodily about its pivotal connection with the pan, which is constituted by the center shaft.

What we claim as our invention is- 1. The combination with a kneading-pan, of a detachable rotary kneading apparatus comprising a central pivot, a fixed support Within the pan for the said kneading apparatus, and a locking device between said central pivot and said support for attaching said kneadin g apparatus to the pan, substantially as herein described.

2. The combination of a rotary gear-box having a directly-attached hand-crank, a center gear and side gears geared together Within said box, the said side gears having kneading-blades dependent from them below the box, a kneading-pan having a central support for said box, and a shaft for said center gear constituting a pivotal connection between said gear-box and the pan, substantially as herein described.

3. The combination of a pan having Within it a central ixed standard, a detachable rotary gear-box supported on said standard and containing a central shaft and side shafts geared with said central shaft, kneadingblades attached to said side shafts, the said central standard containing a bearing for the lower portion of said central shaft which projects through the bottom of the gear-box, substantially as herein described.

4l. The combination of a kneading-pan having Within it a fixed central standard, a rotary kneading apparatus supported on said standard and comprising a central shaft about Which said apparatus rotates, a bearing in the crown of said standard for the lower part of said shaft, and a locking device between said shaft and standard consisting of a lateral projection on said shaft below said bearing and a downward projection on the bottom of said bearing, substantially as herein described.

GEORGE M. BALL. FREDERIC J. BALL. NVitnesses:

G. H. OLDRING, JNO. W. FRASER.

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