US2609959A

US2609959A - Bake pan unit

Info

Publication number: US2609959A
Application number: US98084A
Authority: US
Inventors: Jesse L Darnell; Elbert M Cormack
Original assignee: Lockwood Manufacturing Co
Current assignee: Lockwood Manufacturing Co
Priority date: 1949-06-09
Filing date: 1949-06-09
Publication date: 1952-09-09
Anticipated expiration: 1969-09-09

Description

P 1952 J. L. DARNELL ET AL 2,609,959

BAKE PAN UNIT Filed June 9, 1949 I 2 SHEETSSHEET 1 IN V EN TOR.

JESSE L. DARNELL BY ELBERTM CORMACK P 9, 1952 J; L. DARNELL ET AL 2,609,959

BAKE PAN UNIT Filed June 9, 1949 2 SHEETS-SHEET 2.

INVENTORS. J Jzsss L. DARNELL LBERT M. CORMAC/f i /3 2/ "13 BY E y M -i- 97 ZW Patented Sept. 9, i952 BAKE PAN UNIT ,Jesse L. Darnell, Milford, and Elbert M. Cormack, Mount Healthy, Ohio, assignors to The ,Lockwood Manufacturing Company, Ohio, a corporation of Ohio Cincinnati,

Application June 9, 1949, Serial No. 98,084

'I his invention relates to baking pan units of the typedisclosed in prior Patents Nos. 2,037,759, 2,143,728, and 2,198,105 issued to Elmer H. Chandonia, and more particularly to improvements in the means whereby the pans are secured to the straps or bands of the unit.

Pan sets for bakers usually comprise a plurality of individual pans arranged in side by side or .paralle1 relationship and secured together as a unit by means of a band that embraces the pan unit and is secured to the individual pans. The number of pans in a set, the space between pans, and the size and shape of individual 'pans are usually specified by the baker. The baker also may specify his choice of type of band, some preferring the over-wire band and others the under-wire band.

, An object of this invention is to provide a panset construction having a vertical lap clinch for both over-wire and under-wire banded pan-sets.

Another objector the invention is to provide a rivetless paneset with an improved vertical clinch between the pans and the bands for both the over-wire and the under-wire band type.

These and other objects of the invention will in part be apparent and will in part be obvious from the following description, taken in conjunction with the accompanying drawings, in

which:

dividual pans are rigidly secured at the ends thereof to the band; e

Fig. 2 is an enlarged sectional view taken on line II--II of Fig. 1;

Fig. 3 is a view in elevation of a portion of the over-wire band shown in Fig. 1;

Fig. 4 is a view in section taken on line IV-IV of Fig. 3;

Fig. 5 is a view in perspectwe of one end of a pan such as shown in Fig. 1;

Fig. 6 is a view in section taken on 11118 VI- VI of Fi 1; i

Fig. 7 is-a view similar to Fig. 1, of an underwire band construction embodying thevertical clinch ofthe invention; i

Fig. 8 is a view in side elevation of a pan unit showing how the bands at the oppositeends of the pan unit are tied together by means of a strap;

Fig. 9 is atop plan view of a pan-set such as "shown in the preceding views;

7 Claims. (01. 22043.2)

forms of bands containing vertical lap. clinch lugs. ,l

, Throughout the drawings and the specification like reference charactersindicate like parts. In Fig. 1 of the drawings we have shown a portion of the pan-set which comprises a plurality of pans l0. only two of which are shown, in end view. These pans are spaced aparta predetermined or specified distance and are rigidly secured at their ends to a band II. The band ll may comprise two sections, one at each end of the pan set, with the ends of the bands tied together by means-of straps l2 which are riveted to the bands as indicated at l3 in Figs. 8 and 9. The straps l2 may be omitted and the ends of the band sections H may be riveted or otherwise secured to the outer walls of the outermost pans as shown at R in Fig. 11, or there may be a continuous peripheral or embracing band H having the same shape in section as sections H, the ends of which overlap as at R at the outer wall of one of the outermost pans, the overlapping ends being riveted orotherwise secured as shown in Fig. 10. e

The opposite ends of the pans of a unit are rigidly and firmly secured to the bands H by means of a vertical clinch l4.

The pans 10 of these units are of usual construction. 'As is customary, each pan is made from a sheet of tin plate which has been blanked in the flat in such a manner that when the metal is folded, a pan having ends and sides is formed. The ends of the pans, as will be observed from the drawingshave, as a result of the folding, inverted triangular flaps l5, andthese flaps are of double thickness. Behind the inverted triangular flaps l5 there is a single thickness .end wall l6 at each endof the pan. The end walls l6 and the side walls of the pan project above the base lines I! of the triangular flaps.

As may be seen by inspection of Figs. 1 and 5, an L-shaped notch l8 iscut in the free corners of the triangular flaps [5, so that these corners can be bent or deflected outwardly from the end walls [6 after thepans have been completely formed. The pans shown are of the type having a reinforcing wire 20 extending around the periphery of the individual pans at the top thereof and the edges of the sides and ends of the pans arerolled over this wire, the rolled-over edge being indicated by numeral 2|. Thus, as may be seen in Figs. 1, 2, 5, and 6, the rolled-over edges 2| conceal the reinforcing wire 20 and abut the triangular flaps l5 between the shoulders 28 of the notches I8 and the outer corners of the lower edges, respectively, the upper half-rolled groove 24 being deep enough to substantially embrace the rolled edge 2| at the ends and corners of the pans. The lower half-round groove 25 is primarily forthe purpose of increasing the stifiness and rigidity of the bands.

Bands H are provided with inwardly and downwardly projecting vertical lugs 26 which are formed by partially punching out metal as indicated in the drawings. These lugs are dis- Fig." 1.

posed in a vertical plane and extend downwardly ii below the rim of the pan. As may be seen more particularly in Figs. 2 and 4, the lugs 26 are bent inwardly towards the end walls 16 of the pan in order to accommodate/the corners of flaps [5. The lugs 26 are so spaced that when the bands are attached to the pan units, the lugs will fit quite snugly against the vertical shoulders 28 "formed at the ends of the notches I8. I

The bands are applied to the ends-of a series of pans by deflecting the free corners I5 of the triangular folds l5 outwardly from the end walls l6 as indicated in dotted lines in Fig. 5. The bands are then slipped over the top of the pans with the lugs 26 placed behind the corners of flaps l5. By applying pressure to the bands in the regions of the lugs 26, the free corners of the triangular folds or flaps l5 and the lugs 26 are squeezed together and clinched as shown in Fig. 2-. When the pans have been attached to the bands H in the manner above described the pans are held against movement longitudinally of the bands by the co-action of the lugs 26 and the abutting shoulders 28. Also, by reason of the fact that groove 24 substantially. embraces the rolled edges 2i of the pans, the pans are firmly locked to the bands so that they can, neither turn about either lug 25 as an aXis. The bands H having been secured to the ends of the pans as above described, the tie bands [2 are applied as shown in Figs. 8 and 9. The upper edges of bands I2 may if desired be designed to abut the underside of the rolled longitudinaled'ges of the outermost pans in a unit and are riveted to the bands I l as indicated at 3.

In the band over-wire construction, thereinforcing wire 20 is usually of-larger diameter than the reinforcing wire used on pans having the under-wire band construction shown in Fig. 7. In the over-wire construction the width of the bands ii may be greater than those, shown in Fig. '7. 'However, the matter of dimension of bands is largely dictated by a particular customers choice. In any event, these bands are made as heavy or strong as is necessary to give the strength and rigidity required in a, pan unit, in View of the rough handling they receive in use.

If theiormof bands shown in Figs. 10 and l l are employed, they are securedto form the vertical lap clinch between the c ps [5' and lugs 26 as above described. In the form shown in Fig. 11, the ends of sections H areriveted-to the pan walls as shown, or if the continuous band of Fig. 10 is employed, the overlapping ends' of the band are secured together aswith rivets or byaprojection weld.

The strength and rigidity of the'triangu'lar flaps I5 and the clinch lugs 26 prevent downward movement of the end bands or band sections in relation to the pan ends, while the interlocking of the bands H with the rolled edges of the pan ends and the securing of the ends thereof as shown, prevents upward movement of the bands in relation to the pan ends.

In Fig. '7, we have illustrated how the vertical clinch may be applied to under-wire bands. As there illustrated, the upper half-round groove 24' fits snugly under the wire reinforced rolled edge at the ends and corners of the pans, and the v'ertical clinch lugs 26 are disposed behind the freecornersof the triangular flaps l5, as in In the under-wire band construction it may be'found that thefree corners of the triangular flaps [5, when made as in Fig. 1, will be so stifi that'they can not be easily bent outwardly to receive the vertical clinch lugs 26 witho-ut'considerable efiort. Therefore, to make it easier to bend these free corners outwardly from the end walls I 6 of the pans, an additional notch 30 may be cut in the triangular flaps l5 immediately under the rolled upper edges of the pans. It is to be observed, also, that'the L-shaped notches 18' extend farther down into the free corners of the flaps 15 because the clinch lugs 26 are spacedrfarthe'r from the rim 2| of the pans when the under-wire bands are applied.

When the bands are applied, the vertical clinch lugs 26 abut the corners 28' in the triangular flaps and the pans can not shift in either direction lengthwise of thebands ll As in the overwire band construction, the clinch lugs and the free corners of the triangular flaps i5 are squeezed together so as to cause the flaps and the lugs and end walls I6, to be firmly and rigidly clinched. Thus, a rigid connection is accomplished by means of the vertical clinch between the ends of the .pans and the bands. 7

Havin thus described the invention, it will be apparent to those skilled in this art, that changes may be made in the specific constructions illustrated without departing from the spirit or the scope ofthe invention. Therefore, what we claim as new and desire tosecure by Letters Patent is: l. In a b-akers banded pan-set comprising a plurality of bake pans disposed in side by side relationship, the ends of each pan having a pair of inverted substantially triangular. flaps, the bases of which are parallel to and spaced from the tops of said pans, a band at each end of the pans,is'aid bands extending across the ends' of all pans in'the s'et andaround the outercornersof thefoutermost pans in said set and having" downwardly projecting vertical clinch lugs offset inwardly of the bands, said lugs being disposed between said flaps and the end walls of said'pans, and straps disposed along theouter sides of the outermost pans .and. connected to the ends of the said bands disposed at the opposite ends of said pans, the foregoing pan-set being characterized bythe fact that each pan has a wire-reinforced rolled edge at the periphery of the top thereof, that the end bands are provided at their upper edges with a groove adapted to receive-the wirere nf orced edges of the panends, that t he triangular end flaps are provided with notches ad jacent the under sidesbf said reinforced pan edges, and that said vertioal'clincnlugs extend between said flaps and pan end walls and abut 2. A pan-set according to claim 1 characterized by the fact that the free corners of each triangular flap at each pan end. are notched, and that the end bands are provided with two inwardly and downwardly projecting vertical clinch lugs for each pan end, and that the lugs are spaced to interlock with said notches in the free corners of said flaps, the said flap corners and lugs being squeezed together to form a rigid vertical clinch.

3. A pan-set according to claim 1 characterized by the fact that each pan has a wire-reinforced rolled edge at the periphery of the top thereof, that the end bands are provided at their upper edges with a groove adapted to receive the wirereinforced edges of the pan ends, that the free corners of each triangular flap at each pan end are notched, and that the end bands are provided with two inwardly and downwardly projecting vertical clinch lugs for each pan end, and that the lugs are spaced to interlock with said notches in the free corners of said flaps, the said flap corners and lugs being squeezed together to form V a rigid vertical clinch.

4. A pan-set according to claim 1 characterized by the fact that the end bands are provided with stiffening grooves along their longitudinal edges, that the upper edges of said bands abut the under side of the rolled edge at the top of the pan ends, that the triangular end flaps are provided with notches adjacent the under sides of said reinforced pan edges, and that said vertical clinch lugs extend between said flaps and pan end walls and abut the shoulders of said notches whereby the pans are secured to said bands and locked against movement lengthwise of said bands.

5. A pan-set according to claim 1 characterized by the fact that the end bands are provided with stiffening grooves along their longitudinal edges, that the upper edges of said bands abut the under side of the rolled edge at the top of the pan ends, that the free corners of each triangular flap at each pan end are notched, and that the end bands are provided with two inwardly and downwardly projecting vertical clinch lugs for each pan end, and that the lugs are spaced to interlock with said notches in the free corners of said flaps, the said flap corners and lugs being squeezed together to form a rigid vertical clinch.

6. A pan-set according to claim 1 characterized by the fact that the end bands are provided with stifiening grooves along their longitudinal edges, that the upper edges of said bands abut the under side of the rolled edge at the top of the pan ends, that the bands extend across the ends of all the pans in the unit and around the outer corners of the outermost pans of the set, that the free corners of each triangular flap at each pan end are notched, and that the end bands are provided with two inwardly and downwardly projecting vertical clinch lugs for each pan end, and that the lugs are spaced to interlock with said notches in the free corners of said flaps, the said flap corners and lugs being squeezed together to form a rigid vertical clinch.

'7. In a bakers banded pan-set comprising a plurality of bake pans disposed in side by side relationship, the ends of each pan having a pair of inverted substantially triangular flaps, the bases of which are parallel to and spaced from the tops of said pans, a band embracing the pan set and engaging the upper portions of the opposite end walls of the individual pans in the set and the upper portions of the outer walls in the outermost pans of said set, the portions of the bands engaging the end walls of said pans being provided with spaced downwardly projecting clinch lugs offset inwardly of the said band sections, there being a lug between each of said flaps and each end wall of a pan, and shoulders on said flaps engaging the outermost sides of said lu s to prevent movement of said pans length- A wise of said band sections.

JESSE L. DARNELL.

ELBERT M. CORMACK.

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

UNITED STATES PATENTS Number Name Date 1,206,872 Lockwood et al Dec. 5, 1916 2,078,716 Macdonald Apr. 27, 1937 2,143,728 Chandom'a Jan. 10, 1939 2,357,048 Jackson Aug. 29, 1944