US2563941A

US2563941A - Beater

Info

Publication number: US2563941A
Application number: US748706A
Authority: US
Inventors: Krasberg Rudolf
Original assignee: Individual
Current assignee: Individual
Priority date: 1947-05-17
Filing date: 1947-05-17
Publication date: 1951-08-14
Anticipated expiration: 1968-08-14

Description

R. KRASBERG Aug. 14, 1951 BEATER 2 Sheets-Sheet l w fii Filed May 17, 1947 INVENTOR.

Ma /67M 9 R. KRASBERG 2,563,941

BEATER Fi led May 17, 1947 2 Sheets-Sheet 2 INVENTOR.

\ @wzwawq; -%@%W/JA Patented Aug. 14, 1951 UNITED STATES PATENT OFFICE BEATER Rudolf Krasberg, Chicago, Application May '17, 1947, Serial No. 748,706

6 Claims.

\ This invention relates to improvements in beaters used to whip cream, eggs and the like, and it has for its primary object the provision of a novel beater of simple and rugged construction,

consisting largely of sheet metal stampings, which path tangential to the whirling body of liquid, thereby to insure extremely rapid action and thorough aeration in the mixing or beating operation.

A further object is to provide a beater having a stamped metal frame and improved means for mounting the large gear on the frame, including a hollow bearing stud secured to the frame and having an annular embossed flange receiving a complementary flange on the gear, whereby wobbling and undesired looseness of the parts are prevented. A still further object is to provide various other improvements and features such as will be pointed out in the description with reference to th accompanying drawing wherein:

Figs. 1 and ,2 are elevational views of a beater constructed in accordance with and embodying the invention, certain parts being broken away in these views.

Fig. 3 is a horizontal section on the lin 3-3 in Fig. l

Fig. 4 is a vertical section on the line 4-4 in Fig. 2;

Fig. '7 is a perspective view of a sheet metal frame or bracket; and

Fig. 8 is a fragmentary vertical section on the line 8-8 in Fig. 2.

' The beater includes a metal rod or shaft H] which normally is positioned vertically and which carries at its lower end a fan or propeller member I2 that serves to agitate or whirl the liquid when rotated. Near its upper end the rod I0 is provided with lateral lugs l4 formed thereon by punching, and a handle l6 of wood or other suitable material having a central bore therein is driven onto the upper end portion of the rod ID to be securely held by the lugs I4.

The lower end portion of the shaft I0 is of reduced diameter and is knurled as indicated at ill in Figs. 5 and 8. A bearing member 20 is fitted on the knurled end. is of the shaft Hi to. af-

. 2 ford a. rest for the beater when in use. The fan I2 is rotatably mounted on a shoulder of the bearing 20 as shown.

Drive rods 22, of whichthere are two in number in the present instance. are disposed on either side of the shaft Ill and are secured at their lower ends to the fan l2. The drive rods 20 extend upwardly substantially parallel to the shaft I!) and are secured at their upper ends to a horizontally disposed pinion 24 that is rotatable on the shaft 10.

A large gear 25., preferably comprising a. disclike member stamped out of sheet metal, is supported by a frame or bracket 28 that is carried by the .rod Ill. The gear 26 is disposed vertically and is provided with holes 30 therein, Fig. 2, to mesh with the pinion 24. The frame 28 comprises a sheet metal stamping, Fig. 7. having a flat middle section 32 and cupped

portions

34 and 36 above and below the middle section to receive the shaft Ill. The

sections

34 and 36. prior to assembly on the shaft [0, are U-shaped in cross section. The frame 28 is secured on the shaft 10 by forming or bending the legs of these U-sections around the shaft thereby to grip it. Lips 38 on the extreme upper end of the upper section 34 are bent sharply inward and are received in notches formed in the shaft [0 by punching out a lug 40 as shown in Fig. 6. Thus the frame 28 is securely held in position on the shaft l0 and cannot be twisted on the shaft. The lug 40 and upper end of the U-section 34 serve as a thrust support for the handle l-G.

A hollow bearing stud 42 formed of sheet metal is mounted in an opening 44 in the middle section 32 of the frame 28 and is riveted or otherwise secured to the frame 28. The gear 26 is rotatably mounted on the stud 42, being formed with an annular lip or flange 45, Fig. 4, which bears on a portion of the stud. The bearing stud 42 has a recess inside an annular bead or embossment 4! thereon to receive the flange 45, and it terminates in a flange 46 that bears against the outer face of thegear 26, holding the central portion of the gear 26 against the flat section 32 of the frame 28. The interfitted flange 45 and bead 41, as well as the flange 46, effectively prevent wobbling of the gear 26 on the bearing 42.

The gear 26 is provided with an elongated hollow stud 48 which is secured thereto near the periphery of the gear and extends laterally therefrom. A knob 50 is rotatably mounted on the stud 48 to afford a grip for the user. A

knurled knob retainer 52 is press-fitted in the outer end of the stud 48.

An aerator 54' ofv narrow, elongated form.

extends diametrically beneath the fan l2 and is secured to the bearing 20 by being riveted thereto or in any other suitable manner. The aerator 54 comprises a single piece of sheet metal which is bent upwardly at its ends to provide baffles or wings 56. These upstanding baffles 56 are formed and oriented in the fashion illustrated in Figs. 1, 2 and 3 so as to oppose the swirling motion of the liquid, which takes place generally in the direction of the arrows, Fig. 3. As the paddles or blades of the propeller 12 are rotated, they force the liquid against the bottom and sides of the bowl or container while causing it to whirl about. When the liquid encounters the baflles 56, a portion of it is directed tangentially rearward thereby to produce a circulatory motion of the liquid vertically in addition to the horizontal rotary movement. directed against the baffles 56 and then upwardly and back toward the whirling body of liquid, being thoroughly aerated in the process.

It should be noted that the aerator. 54 is sufficiently narrow so that it does not materially Thus, the liquid is continuously .impede the flow of liquid through the paddles of the fan l2. Extremely rapid whipping action is afforded by the device. The entire beater construction is simple, inexpensive and durable. The stamped frame 28 and bearing stud 42 and the manner in which the gear 26 is mounted on the stud 42 are features which insure dependable operation of the beater over a long period of time.

It is obvious that various changes may be made in the specific embodiment set forth for purposes of illustration without departing from the spirit of the invention. The invention is accordingly not to be limited to the specific embodiment shown and described, but only as indicated in the following claims.

The invention is hereby claimed as follows:

1. A beater comprising a stationary shaft, a bottom bearing member on said shaft, a fan .rotatably mounted on said bearing member, means for driving said fan, and an aerator comprising an elongated narrow member secured to said bearing member and supported thereby, said aerator extending beneath said fan and terminating in an upstanding baflle curled over to provide a projected area on a plane perpendicular to said shaft and thereby to direct the swirling liquid in a substantially circulatory vertical movement.

2. A beater comprising a stationary shaft, a bottom bearing member on said shaft, a fan rotatably mounted on said bearing member, means for driving said fan, and an aerator comprising an elongated narrow member secured to said bearing member and supported thereby, said aerator extending beneath said fan and terminating in a pair of upstanding bafiles each curled over to provide a projected area on a plane perpendicular to said shaft and thereby to oppose the swirling motion of the liquid and direct the liquid in a substantially circulatory vertical path.

3. A beater comprising a vertical support member, a bearing member at the base of said support member, a fan rotatably mounted on said bearing member, means for driving said fan, and a baflie secured to and supported by said support member and positioned adjacent the periphery of said fan, said baflle comprising a strip of sheet material upwardly directed and twisted to have an overlying surface providing a substantial ing liquid tangentially rearward relative to said fan.

4. A beater comprising a vertical support member, a bearing member at the base of said support member, a fan rotatably mounted on said bearing member, means for driving said fan, said fan having paddles arranged to force the liquid downwardly and outwardly against the wall of the container, and a plurality of baffles securedto and supported by said support member and positioned adjacent the periphery of said fan, each of said baflies being the upwardly bent and twisted extremitiesv of an elongated narrow member stationed below said paddles and so formed as to have an overlying surface providing a substantial projected area on a plane perpendicular to said shaft and thereby to direct a portion of the swirling liquid tangentially rearward relative to said fan. I

5. In a beater, a stationary frame, a sheet metal bearing stud secured to said frame, and a gear mounted on said bearing stud, said gear and said stud having complementary flanged and embossed portions to prevent wobbling of said gear.

6.1m a beater, a stationary shaft, a stamped sheet metal frame mounted on said shaft, a hollow sheet metal bearing stud secured to said frame, and a gear formed of sheet metal and mounted on said bearing stud, said stud having an annular embossed flange holding said gear against said frame, and said gear having an annular flange received by the embossed flange on said stud.

RUDOLF KRASBERG.

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

UNITED STATES PATENTS FOREIGN PATENTS Country Date Great Britain Mar. 1, 1907 Number Number