US1974618A

US1974618A - Method of molding insulating handles

Info

Publication number: US1974618A
Application number: US519467A
Authority: US
Inventors: Wilmar F Lent
Original assignee: Cutler Hammer Inc
Current assignee: Cutler Hammer Inc
Priority date: 1931-03-02
Filing date: 1931-03-02
Publication date: 1934-09-25
Anticipated expiration: 1951-09-25

Description

Sept. 25, 1934. w. F. am I 1,974,618

METHOD OF MOLDING INSULATING HANDLES Filed March 2. 1951 Patented Sept. 25, 1934 METHOD or Momma INSULATING "HANDLES Wilmar 1F. Lent, 1\lilwaukee,'-1Wis.,.assignornto GutlcraI-lamrner, End, Milwaukee, Wis., a corporation of Delaware 1 r Application March 2, 931, sens n 519,467

' 6 Claims. (01.18155) W invention relates to improvements in then inwardly anddownwardlyoto .providethe ,methodsof molding insulating handles; reflexed end 14. :The reflexedend 14 is likewise :AI I QbjBGl', of the invention is to provide areprovided with a through-passage Iiiwhich sis ,iiexed molded insulating handle with a novel 7 formed by a retractabledie element or. bushing form of countersink or recess in the reilexed end (not shown) tobewithdrawn toward-thenleft thereof. L p (Fig. 1) in said plane at right angles to-the'direc- .Another objectis toprovide a novel method tion ofthe applied moldingpressure. As :best of,moldinga reflexed handle having such a counillustrated in Fig. 1 the passage is slightly flared tersink or recess. p toward the left to compensate for possible. iii- 2 other and morespecific object is to provide accuraciesin the size of the molded piece-,orin meansf orproperly insulating the head of a screw the positioning of the fasteningvelements. The orotherelement which may be employed to seflared or tapered form of passage 12,.recess, 13, cure the reflexed molded insulating handle to a and passage 15 likewise facilitatesretraction. or cooking utensil of thedesired form. Withdrawal of the die elements. N TheaccompanYihg drawing illustrates an em- ,It is desired that, a countersinkor recess be bodiment of the invention which will now be deprovided in the inner surface of the reflexed end scribed, it being understood that the invention is 14 of the handle, in order that the head of the susceptible of embodiment in other forms without fastening screw 16 will be properly insulated to departing from the scope or" the appended claims. protect the hand or fingers of a person who grasps In the drawing, Figure 1 is a side'elevational the handle 10 to lift or move the utensil. As will view of a molded insulating handle embodying be apparent to those skilled in the art, there is my invention, and showing in section the usual insufiicient space between the inner surface of means for attaching the handle to a hollow-ware end 14 and the main body of handle 10 to permit utensil. the use of a retractable die element such as may Fig. 2 is an end elevation of the handle looking be employed to form the passage 12 and recess 139" toward the right in Fig. 1. Accordingly I provide a countersink or recess Fig. 3 is a similar elevation looking toward the of the form shown at 17 in the inner face of the left in Fig. l,-a portion of the handle being reflexed end 14, said recess 1'7 opening laterally broken away to illustrate the countersink or reto one side of the handle, to permit forming of n o cess at the reflexed end of said handle. said recess by the straight-line molding of the Fig. 4 is an enlarged sectional view, on the line piece. That is to say, one of the straight-line 4-4 of Fig. 1, illustrating the manner in which molding die members (not shown) has fixed therethe opposite sides of the handle are paneled or to or formed integrally therewith a projecting decorated, and element having a contour such as to provide the m Fig. 5 is a fragmentary elevational view of a rec s 17 by the molding Operationmolded handle having amodified form of coun- Obviously, if desired, t e recess 17 might be tersink or recess. extended entirely across the width of the handle Referring to the drawing, the numeral 10 deseither by P v d g a p jection of greater l t ignates a molded insulating handle which may upon the affl d d m b 01 by pro- 0 in general be of a form well known in the art. viding half-length projections on each of the two Thus, the handle is provided with a lower end 11 die members. However, the arrangement illushaving a slightly tapered through-passage 12 and trated is preferred, Since the a p ran o th a. countersink or recess 13,said passage and said handle is improved y having the r c ss 1 closed "recess being preferably somewhat elliptical, as n at least one side of the handle, nd better shown, to compensate for possible shrinkage or protection is D V dGd from burning the fingers i warpage of the molded piece or to allow for slight by the screw-head. In this connection, I have inaccuracies in the spacing of the fastening eleillustrated a modified form of countersink or ments upon the hollow-ware article. As will be recess Which p s a wo paced points 17 I understood, the passage 12 and recess 13 are 17 to On d O the handle 10 and likewise formed by a retractable die element or bushing opens, as indicated at to the Ot er Side of 1195 (not shown) which is withdrawn toward the right h handley this m s e ecess 1'? is made (Fig. 1) in a plane at right angles to the direction of substantially circular contour, by closing a. of the applied molding pressure. portion of one side thereof, as indicated at 17,

The body of handle 10 curves upwardly and. while dividing the open area of said recess be- {outwardly from the lower end 11- thereof, and tween opposite sides of the handle. As will be apparent the recess 17 is formed by providing interleaving projections on the respective members of the straight-line molding die.

The cofiee percolator or other cooking utensil 18 has attached thereto in any suitable manner the perforated metal stampings 19 and 20, which serve to retain the nuts 21 and 22, respectively, which are preferably of polygonal contour. The screw 16 is adapted to cooperate with nut 21 to clamp the reflexed end 14 of handle 10 to the utensil 18, and screw 23 cooperates with nut 22 to clamp the lower end 11 of said handle in fixed position.

The opposite sides of the molded handle may be stippled and paneled or otherwise decorated, as best illustrated at Hand 25 in Fig. i.

What I claim as new and desire to secure by Letters Patent is:

1. In the method of molding an insulating handle having a refiexed end portion, the inner surface of said reflexed end portion being in relatively close juxtaposition to the inner surface of the main body portion of the handle and having a countersunk recess formed therein, the step which consists in forming said'handle and the 5 walls of said recess by a single straight-line molding operation.

2. The method of molding an insulating handle having substantially parallel flat sides and an end portion curved to oppose the main body thereof, which consists in forming the piece by a straightline molding operation, and utilizing said straightline molding operation to provide a countersink or recess in the surface of said end portion adjacent to the main body of said handle.

3. The method of molding an insulating handle having substantially parallel flat sides and an end portion curved to oppose the main body thereof, which comprises forming the piece by a straight-line molding operation, utilizing said straight-line molding operation to provide a countersink or recess in the surface of said end portion adjacent to the main body of said handle, and simultaneously forming in said end portion a through passage communicating with said recess.

4. The method of molding an insulating handle having an end portion reflexed to oppose the main body thereof and a countersink or recess opening to the surface of said end portion adjacent to said main body, which consists in formmg said handle and said recess by a single straight-line molding operation.

5. The method of molding an insulating handle having an end portion refiexed to oppose the main body thereof and a countersink or recess opening to the surface of said end portion adjacent to said main body, which consists in forming said handle by a single straight-line molding operation, and utilizing an integral portion of at least one of the straight-line molding die members to shape the walls of said recess.

6. The method of molding an insulating handle having an end portion reflexed to oppose the main body thereof and a countersink or recess opening to the surface of said end portion adjacent to said main body, which consists in forming said handle and said recess by a single straight-line molding operation, and simultaneously forming in said reflexed end portion a passage extending in a plane at substantially right angles to said surface.

WILMAR F. LENT.