US2500481A - Hinge structure - Google Patents

Description

March 14, 1950 AbLER ETAL 2,500,481

HINGE STRUCTURE Filed July 18, 1945 C 1 V M INVENTOR5. J0 75%)? 2 Filer;

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Patented Mar. 14, 1950 OFFICE HINGE STRUCTURE John B. Adler, Lincoln Park, and Leonard J. Rosa, Detroit, Mich.

Application July 18, 1945, Serial No. 605,694 2 Claims. (01. 16-169) larly hinges of the so-called theft-proof type, the principal object being the provision of a hinge of this type that is simple in construction and efiicient in its purpose.

Objects of the invention include the provision of a hinge structure provided with a hardened hinge pin of new and novel construction: the provision of a hinge structure having a hardened hinged pin maintained against axial displacement with respect to the hinge halves in a new and novel manner; and the provision of a hinge structure including halves joined by a hardened hinge pin, the hinge pin having one ormore integral ribs or flanges thereon interposed between opposed eyes of the two halves.

The above being among the objects of the present invention, the same consists in certain new and novel features of construction and combinations of parts to be hereinafter described with reference to the accompanying drawing, and then claimed, having the above and other objects in view.

In the accompanying drawing which illustrates suitable embodiments of the present invention and in which like numerals refer to like parts throughout the several different views,

Fig. 1 is a face view of a hinge incorporating the present invention;

Fig. 2 is an enlarged transverse sectional view taken longitudinally through the hinge pin of the hinge shown in Fig. 1 as on the line 2-2 thereof;

Fig. 3 is a view similar to. Fig. 1 showing a modified form of construction; and,

Fig. 4 is a view similar to Fig. 2 taken on the line 4-4 of Fig. 3.

So-called theft-proof hinges have heretofore been made with hardened hinge pins but in the past, as far as we are aware, the hinge pins are of conventional construction comprising a cylindrical pin projecting through the eyes of the twoconnected hinge halves and headed over on their opposite ends. While such structures will resist removal of one end of a hinge pin by filing, and thereby prevent separation of the hinge halves by removal of the pin under such circumstances, the headed ends are exposed and may be readily removed by a grinding wheel. Furthermore, in the past in making such hinges the hinges have been assembled and then heated and quenched in order to harden the pin.

In accordance with the present invention the headed ends of the pins are eliminated, the pins are anchored against longitudinal displacement with respect to the hinge halves by ribs, flanges or collars at least fixed and preferably formed integrally therewith and disposed between the opposed ends of adjacent eyes on the two hinge halves. As a result it is substantially impossible to grind or otherwise destroy the ribs or flanges by a grinding wheel or otherwise without entirely destroying the hinge structure, and the security of the hinge is, therefore, greatly enhanced. Additionally, in accordance with the present invention the hinge pins are hardened before assembly to the hinge halves, thus dispensing with the expensive operation necessary in the older types of hinge structures.

It will be appreciated, of course, that the present. invention may be applied to any suitable type of hinge structure regardless of its shape or method of fastening it to the parts to-be hinged together and in this respect the hinge may be of that type formed from sheet metal wherein the eyes are formed by bending tongues from the blank, or maybe employed in connection with hinges of the type wherein the two halves are die-cast fromsuitable metal or other suitable material. For the purpose of illustration the hinges in the drawing are illustrated of the type formed from sheet metal in the first-described manner.

Referring to the drawing the hinge illustrated in Fig. 1 consists of a half in having a pair of axially spaced and aligned eyes l2 and the hinge half I4 as having a single eye l6 fitting between the eyes [2. As illustrated in Fig. 2 a cylindrical hinge pin 18 projects through both eyes I2 and the eye l6 and is preferably of such length that its ends are flush with the outer ends of the eyes [2 as shown.

The hinge pin l8 has fixed thereto and preferably integrally formed therewith a radially outwardly projecting bead, flange, projection or collar which, in the broader aspects of the invention, may be of relatively short angular extent relative to the axis of the pin l8, or of any increased angular extent up to a complete circle. Inasmuch as it may be formed annular by simply upsetting a short length of a pin of the diameter of the pin l8, this form will ordinarily be employed as more economical and most efficient and is therefore shown in the drawing by way of illustration and indicated by the numeral 20. The flange 20 is interposed between one end .of the eye It and the opposed end of the adjacent eye I2, the axial spacing of the eyes I! in comparison with the axial length of the eye is preferably being such as to snugly accommodate the rib or flange 20 between such ends. Preferably but not necessarily the radial dimension of the rib or flange 20 is substantially equal to the thickness of the metal from which the halves l and I4 are formed as indicated in Fig. 2, so that its periphery is flush with the peripheries of the eyes 12 and [6. The rib or flange 2B in being confined betweenopposed ends of a pair of eyes on the opposed halves of the hingeserves to lock the hinge pin against axial movement with respect to the eyes of the opposite halves l0 and I4 and the adjacent eyes guard against access to the rib or flange 20 from the ends thereof and therefore protect such rib or flange against destruction.

The hinge pin is and the flange 20 when employed in a theft-proof hinge are formed from steel and hardened, either from a steel that is capable of being hardened by heating and quenching, or from a steel not having this capability but which has been case. hardened after forming. In the theft-proof character is not important it may be formed of any suitable material, soft or hard. -In any event it will be appreciated that it is substantially impossible with out destroying the hinge structure to remove the flange 20'- from the pin I 8- so as to permit the pin l8 to be driven axially from the eyes I and I6 and thereby permit the two halves of the hinge to be separated. I v

In the manufacture of the hinge shown the two halves of the hinge are separately formed and with the portions which form the eyes (2' and I6, respectively, in flat or'in partly bent condition. The two halves l0 and M are then placed in appropriate progressive die structure, the hardened pin 8 with the flange 20 formed thereon positioned in proper location between them, and the portions which are to form the eyes [2 and It then operated upon by the die structure to bend them about the pin l8 into the respective eyes I? and- H? thereby to complete the hinge structure. As will be appreciated by' those skilled in the art such assembling operation may be carried on automatically and at a high rate of speed, thus effecting a material saving in assembly costs as compared to the assembly cost of the former types of theft-proof hinges. onthe other hand by placing" the hardened inin a suitable die structure the two halves lflazrd' M when formed of suitable material may be die cast about the pin to provide the desired struc-- ture'. It will, of course; be appreciated that one or a plurality of ribs or flanges such as- 2 0 may be" provided in a single hinge structure and fact where each hinge half is provided with a pinrality of eyesalike number of ribs or flanges such 20 may be provided on the corresponding hinge'pin, one between the opposed faces of each opposed pair of eyes: As illustrative of this last feature m the hinge shown in Fig. 3 the two halves 30 and 32 are each provided with two axially spaced eyes 34 and 36, respectively, so arranged as shown that when assembled one eye of each half is interposed between two eyes of the other half. In this case and as, brought out in Fig. 4, the corresponding hinge pin 38 which projects through all of the eyes is provided with two annular ribs or flanges 40 correspending to the rib or flange in the first described construction. The ribs or flanges 40 are spaced from one another axially of the hinge pin 38 so that one is received between one eye 34 of the half 30 and one eye 36 of the half 32, while the other is received between the remaining eye 34 of the half 30 and the remaining eye of the half 32'.

Having thus described our invention what is claimed by Letters Patent is:

1. In a hinge structure, in combination, a pair of halves providing a plurality of aligned eyes, one of said halves including at least two axially spaced eyes and the other of said halves including at least one eye interposed between said spaced eyes, a single and separate hinge pin received by all of said eyes, and a radially project ing flange fixed with respect to said pin received between the opposed ends of two adjacent of said eyes, thereby forming a unitary assemblage incapable or being separated except by destruction of said hinge structure.

2. A hinge structure comprising a pair of halves each provided 'witha plurality of aligned and axially spaced eyes, the eyes of both halves being aligned' witn each other, a single and sepa rate hinge pin received by all of said eyes, and

a plurality of radially outwardly projecting flange element's formed integrally with said hinge pin in spaced relation with respect to each other axially or said hinge pin, each of said flanges being received between the adjacent ends of adjacent eyes on the two hinge halves.

B. ADLER.

LEONARD J. ROSA.

REFERENCES cITEn The following, referencesare of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 22830r Squire et al. Feb. 1,185.9 28,510 Shields May 29, 1860 1, 23, 12 Moody J y 922 1,998,301 Atwood Apr 16, 1935' FOREIGN PATENTS Number 4 Country Date rarro Great Britain June' 23', 1899' 23,175 Germany Arug. 15, 1883 1301116 Germany Apr, 24, 1902 1,999 Great Britain a. June 1899"

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