US2235241A

US2235241A - Hinge and method of making members therefor

Info

Publication number: US2235241A
Application number: US317283A
Authority: US
Inventors: William J Tierney
Original assignee: Atwood Vacuum Machine Co
Current assignee: Atwood Vacuum Machine Co
Priority date: 1940-02-05
Filing date: 1940-02-05
Publication date: 1941-03-18
Anticipated expiration: 1958-03-18

Description

March 18, 1941.` `W.'11.1111111151 2,235,241 HINGE AND METHOD or 11111111611111151111?, Tamm-0R 'Y Filed Feb. .5, 1940 :Sheets-shea! 2 Y' Patented Mal-.'18,

. UNITED` STATES 2,235,241 HINGE AND Marilou oF MAKING .MEMBERS l THEREFOR William J. Tierney, Rockford, Ill., assignor to The Atwood Vacuum Machine Company, a copartnership composed o! Seth B. T. Atwood, Rockford, lll.`

PATENT -OFFICE REISSUD Atwood and James Application February 5, 1940, Serial No. 317,283

8 Claims.

cam-shaped periphery, conformed to give the hinge blanks the desired thicknesses atthe various points along the length thereof, whereby to permit speedy and economical production of hinge members of irregular form, a number of them at a time in each strip, the strip being arranged to be cut afterrolling so as to provide a od, therefore, enables the production of, hinge blanks in which the grain runs lengthwise of the piece, thereby giving much greater strength and facilitating production by permitting bending, without danger of weakening the piece, as well as making it possible to straighten a bent hinge without danger of breakage.

Another objectV is to provide' hinge blanks in the manner described, which subsequent to the initial rolling and forming,v are stamped between dies in a transverse plane to bend it longitudinalnumber of specially formed blanks. This meth- (ci. 29-11i Figs. 4J? are sections on the corresponding numbered lines of Fig. 2;

Fig. 8 is a sectional view showing the dies used in the longitudinal bending of the blanks;

the lower die recess forthe coin press operation .illustrated in Fig.` 10, the Alatter view being taken' generally on the line ID--Ill of Fig. 9, and I Fig. 11 is a horizontal section through a portion of an automobile body anddoor illustrating a. hinge v of thetype using lthe hinge members, the production of which is illustrated in Figs. 1-10.

corresponding parts throughout the views. f

` Referring briefly to Fig. 11 for an understanding 'of the hinge, I2 designates a portion of the body and I3 a portion of the door of an automobile. The hinge shown comprises an outer member I4 and an inner member I5 mounted on the body and door respectively. Theouter member I4 is formed from sheet metal to a generally U-shaped cross-section so as toprovide opposed substantially' horizontal` parallel walls, the lower one o f which appears at4 I5 interconnected by a substantially vertical wall I'I. ,The horizontal Walls have embossed portions I 8 e 'Ausl 2.1941

Fig. 9 is a plan view of the bent blankset in The same reference numerals are applied to forming supports for the pintle ISreceived in a bearing hole 20 provided therefor in the pintle end portion 2| of the inner hinge member I5.

-The walls I5`are also flanged outwardly as at 22 1y to the desired shape, and which thereafter is l to provide attaching portions Afor bolting, rivetcoin-pressed between other dies in the plane of the blank to true up and size to width the section atvarious points along the length of the lblank and either straighten it or give it a desired oil'- setting of the pintle end with respect to the other end. The bending gives work hardness and consequent stillness in the cuter or pintle end portion of the hinge member so that it is not as apt to sag and take a set in b'ent form.` The rolling also makes the member closer grained and harder at the pintle bearing so that it will better resist wear, the grain curving around 4 5 the pintle hole.

ing, or otherwise securing the outer hinge mem. ber. Il to the body pillar,- a portion ofwhich appears at 23. A sheet metal face plate 24 suitably welded to the attaching portions 22 is cu-t -away as at 25 to provide operating clearance for the inner'hinge 'member I5. The inner hinge member I5 has an offset portion .26 next to'its attaching end portion 21 where it extends throughv the cutout portion 25 of the plate 24, whereby to provide operatingv clearances for .the gooseneck portion 28 when the door closes. The gooseneck portion 28 is nextto the oilset portion 26, and its radius 29 is long enough so that the -portion 30 clears the body pillar in the opening of the door. The pintle end portion 2| provided on the other'half of the gooseneck portion 28 is approximately at right angles to the attach# ing end portion 21, and the door I3 is accordingly free to swing through approximately 90 from closed to open position.4 Now, it can easily be seen by inspection oi' the inner hinge member I5 ir\-Fig. l1 that it is desirable to have the attaching portion 2`l wide and of relatively thin -section so as to provide proportionately bro-ader surface engagement with the door to which it is secured. On the other hand, it is desirable to have the pintle end portion of narrower and thicker section, the thickened section permitting 4provislonof a pintle bearing hole 20 of large enough diameter Awithout reducing the wall thickness around the bearing hole to too great an extent. The section between the attaching portion 21. and the pintleend portion 2| is preferably of gradually increasing thickness outwardly and gradually increasing width inwardly, as indicated in Figs. 9, and 11.

Referring now to Figs. 1--3, 3| designates the steel bar stock from which blanks B are produced by rolling and forming between

rollers

32 and 33 in the manner shown in Fig. 3. The roller 33 has a plain periphery 3 4 but the periphery 35 of the roller 32 is proled or cam-shaped to conform to the shape of the blanks to be produced, the pe,-

riphery 35 having cam surfaces for the formation of-five blanks in each turn. The bar 3| has a cross-section approximately the same as the pintle end portion 2| of the blank. The attaching end portion 21 of the blank, however, is much thinner and wider and isgiven that form by pressure between the rollers, the

rollers

32 and 33 being operated at the same speed in the direction of the arrows, and being supported in iixed spaced relation. The intermediate portions of the blank between the ends 2| and 21 are of varying thick-.-

ness and width, the blank decreasing in width but increasing in thickness gradually from the attaching end portion 21 toward the pintle end portion '2|, as previously, indicated and as also appears l desired width to iit the hinge seats on the car- Y I'IBSJ 9 and 10, or, where it is desired to have the door. Then, too, the extremities of the end portions 21 wiil ordinarily be milled off square and bring the blank down to the desired length. These trimming operations are simple and inexpensive. The rest of the blank is in accordance with my invention arranged to be trued up and sized to width by a coin press operation after the blank has been'bent between dies to give the out- .er end portion the desired angularity and lateral oil'set, as shown in Fig. 8.' The dies in Fig. 8 are numbered 31 and 38. These dies bend the pintle end portion 2| substantially at right angles to the Y attaching end portion 21, and also form the goosel neck bend 23 'and offset bend 26 in proper relationship to Asaid end portions while the blank B is still in a semi-finished condition. This bending results 'inwork hardness" and as a result the hinge memberis stiffer and is not as apt lto sag and take a set in bent form.

. II ihe dies 39 and le shown in Figs.9 and 10 are `eoining dies, and their Arecesses 4| and 42 are accurately formed so that when the dies are brought together under heavy pressure with the blankB inserted therebetween, the blank is trued up and either straightened, if bent slightly out of line, where a hinge member having the opposite ends on a line is desired, as is true of the one shown in `pintle end portion 2| as. well .las the complete gooseneckportion 23-30 bent into'vertically offset relation with respect to the attaching end Portion 21, this bending can, be taken care of l efciently in this same operation. This-coin pressing results in agreatly hardened surface on the upper and lower longitudinal edges, which means added life inasmuch as these surfaces slidably engage the'bosses i3 in the outer hinge member.

The blank as it comes from vthe coin pressis ready for use as soon as the pintle bearing hole 2l is drilled therein, and when the corner 43 on the extremity of the pintle end portion is rounded of! by milling or grinding' to conform this portion to the'radius ofl the other side of the blank, that other radius it being recalled being formed inthe initial rolling and forming operation by the periphery 35 of the roller 32.V 'I'he rolling results in the compacted grain throughout the length of the blank with resultant increased strength, and the grain is further compacted in the pintle end portion when the blank is subsequently pressed be-l tween dies with the blank in an edgewise position therebetween, thus concentrating the greatest strength in that portion of the hinge member projecting from the body of the car where the greatest strains occur under service conditions. A further important advantage in the initial roll evident from an inspection of Fig. 3 comes from the fact that thegrain is not only compacted at the vicinity of the pintle hole 20, but the grain actual-4 ly is curved around the pintlehole, thus greatly increasing the resistance to-weai.

It is believed the foregoing description conveys a good understanding of the objects and advantages oi' my invention. The appended claims have been drawn with a view to covering all legitimate modications and adaptations.

I claim:

1. The method of making hinge members which consists in subjecting a bar of rectangular .crosssection to a .combination rolling andforming operation between rollers; whereby to form from a single bar a plurality off= connected blank portions having the grain running lengthwise of all of said blank portions, each blank portion as a result of the rolling operation having increased width and decreased thickness at one end and intermediate thicknesses and widths intermediate theends and substantially the original width and thickness of the bar at the other end, then cutting the blanks from the bar, then bending the last named, end portion into substantially right angled relation to the flrst named end portion, and drilling a pintle hole crosswise of the last named end portion.

2. The method of making hinge members which consists in subjecting a bar of rectangular crosssection to a combination rolling and forming operation between rollers, whereby to form from a single bar a plurality of connected blank por..v

tions, each of increased width and decreased thickness at one end and intermediate thicknesses and widths intermediate the ends and sub-V stantially the original width and thickness of the bar at the other end, then cutting the blanks from vthe bar, then bending the last named end portion into substantially right angled relation to the iirst named end portion, thensubiecting at least the pintle end portion to pressure between dies to size towidth and true up the edges of this portion.

' a single baraplurallty of connected blank porassaggi tions, each of increased width and decreased thickness at one end and intermediate thicknesses and widths intermediate the ends and substantially the original width and thickness of the bar .at the other end, then cutting the blanks from the bar, then bending the lastnamed end portion into substantially right angled relation to the first named end portion, then subjecting at least the pintle end portion to pressure between dies to size to width and true up the edges of this portion of the blank, the rst named end portion being trimmed oi along its longitudinal edges and across the end thereof to specied dimensions, and ilnally drilling a pintle hole crosswise of the extremity of the pintle end portion.

4. I'he method of making hinge members which consists in subjecting a 'bar of 'rectangular crosssection to a combination rolling and forming operation between rollers, whereby to form from a singlebar 'a plurality of connectedv blank portions, each of increased width and decreased 'thickness at one end and intermediate thicknesses and widths intermediate the ends and substantially the original width and thickness of the bar at the other end, then cutting the blanks from the bar, then bending the last named end portion of the individual blanks so as to provide a gooseneck-shaped pintle end portion and an intermediate oiset portion, the pintle end of which is substantially at right angles to the iirst named-end portion, then subjecting at least the pintle end portion to pressure between dies to size to width and true up the edges of this portion of the blank, and finally drilling a pintle hole crosswise of the extremity of the pintle end portion.

5. The method of making hinge members which consists in subjecting a bar of rectangular crosssection to a combination rolling and forming operation between rollers,'whereby to form from a single bar a plurality of connected blank portions.

each of increased width and decreased thickness' at one end and intermediate thicknesses and widths intermediate the ends and substantially the original width and thickness of the bar at the other end, then cutting the blanks from the bar, then bending the last named end portion of the individual blanks so as to provide a gooseneckshaped pintle end portion and an intermediate oilset portion, the pintle end of which is substantially at right angles to the ilrst named end portion. then subjecting at least the pintle end portion to pressure between dies to size to width and true up the edges of'this portion of the blank. the nrst named end portion being trimmed ofi along its longitudinal edges and across the end thereof 4 to speciiled dimensions, and finally drilling a pinend portion.

6. As an article of manufacture, a rolled hinge member for a vehicle door hinge formed from a single elongated piece of rectangular section bar stock having the grain running lengthwise, the

said hinge member comprising an attaching shank portion at one end thereof and a pintle-receiving portion at the other end thereof', the pintle-receiving portion being of relatively thick and narrow section, corresponding substantially to the section of the original bar stock. and the attaching end portion being formed to relatively thin and wide section so as to compact the grain transversely of said-portion.- and the intermediate portion of said member being formed to decreasing width and increasing thickness from the attaching .portion toward the pintle-receiving portion so as to compact the grain transversely of said intermediate portion. Y

7. The method of making hinge members which consists-in subjecting a bar of rectangular crosssection to a combination rolling and forming operation between'rollers, whereby to form from a 7 single bar a plurality of connected blank portions having the grain running lengthwise of all of said blank portions, each blank portion as a result.

v ting the blanks from the bar, and drilling a pintle hole crosswise of the last named end portion.

8. As an article of manufacture, a rolled hinge member for a vehicle door hinge formed from a single elongated piece of rectangular section bar'- stock having the grain rimning lengthwise,` the said hinge member comprising an attaching shank portion at one end thereof and a pintle-receiving portion at the other end thereof, the pintle-receiving portion being ofrelatively thick and narrow section, corresponding substantially to the section of the original bar stock. and the attaching end portion being formed to relatively thin and wide section so as to compact the grain transversely of the said portion,` and the intermediate portion of said member being formed to decreasing width and increasing thickness iromthe atl taching portion toward the pintle-receiving portion so as to compact the grain transversely of said intermediate portion, at least the pintle end portion having the grain compacted edgewise of y said portion by pressure between dies.

-WIIZILIALI J. TIERNEY.