US2302674A - Banding press - Google Patents

Description

Nov 24, 1942, w. CARTER BANDING PRESS 2 SheetB-Sheet 1 Filed Nov. 27/1940 M .R O. 9 m 2 w m a I x 2 w I a M 2 m I 3 w a n Willium L- Carter W ATTORNEYS "Nov.24,1942. w. L. CARTER 2,3025674 BANDING PRESS I Filed Nov. 27, 1940 2 Sheets-Sheet 2 i 26 32 EIH 1| 32 I g 31' l i 25 2a Q I so 35 a a 5 I Fig.5-

ATTORNEYS .i Eh

Patented Nov. 24, 1942 UNITED STATES PATENT OFFICE I BANDING PRESS William L. Carter, Philadelphia, Pa.

Application November 2], 1940, Serial No. 367,408

3 Claims.

The invention described herein may be manufactured and used by or for the Government for governmental purposes, without the payment to me of any royalty thereon.

This invention relates to projectiles in general, and in=particular has reference to a method of attaching rifling bands to projectiles. According to the method the bands are put on by means of a banding press in which the thrust of a vertical press member is transmitted to the band by means of horizontal sliding blocks which r ceive the vertical thrust on their inclined surfaces.

It is an object of this invention to facilitate the placingof rifling bands on projectiles.

It is a further object of this invention to pro vide a novel press means for placing rifling bands on projectiles.

It is a further object of this invention to provide a banding press means for securing rifling bands to projectiles wherein a thrust lengthwise of the projectile is converted into a thrust transverse of the same for pressing the band into place.

To these and other ends, the invention consists in the construction, arrangement and combination of elements described hereinafter and pointed out in the claims forming a part of this specification.

A practical embodiment of the invention is 11- lustrated in the accompanying drawings where- Figure 1 is a elevation in axial section of the banding press;

Figure 2 is a plan section taken on the line 2-2 of Figure 1 and showing a projectile in place;

Figure 3 is an elevation in axial section taken on the line 33 of Figure 2;

Figure 4 is an exploded view in perspective of the lower portions of the press;

Figure 5 is a detail in section taken along the line 5-5 of Figure 2;

Figure 6 is an elevation of a projectile showing the band in section and before pressing, and

Figure 7 is a top view of the jaw housing with the cover plate removed.

Referring to the drawings by characters 01E reference there is shown a bed plate I with a central bore 2 for passage of the projectile after banding. This bed plate I has a central circular prominence 3 having embedded therein filler pads 4 which form bearing surfaces for sliding jaws presently to be described. The bed plate I and prominence 3 are channelled out as at 5 to receive a sliding paddle 6, the purpose of which is to form a support for the projectile I, as best seen in Figure 3, and to release the same to permit it to fall through bore 2 after the banding operation is complete.

Fixed to the bed plate I by bolts 8 is a drumshaped housing 9 for the sliding jaws I0. Housing 9 has six radial chambers II of generally T-shape to accommodate the jaws Ill, The lower portions I2 of these chambers II are wider than the legs 53 of the T-jaws Ill in order to permit lateral sliding of the jaws. When housing 9 is bolted to the bed plate 5, these lower openings i2 overlie the filler pads 4 so that the bottoms of the jaws It may slide on the latter.

Jaws it have abore I4 opening into the leg is thereof to accommodate a helical spring I5 the purpose of which is to keep the jaw I9 normally distended outwardly of the center of the housing 9. On the inward face of the jaws III are serrations I6 for gripping the band I! and applying localized pressure thereto to ensure intimate contact of the latter with the band seat I8 on the projectile. This seat I8 is usually provided with a roughened surface such as afiorded by annular ridges I9 to improve the bond with the band. On the outer face of the jaws I0 is an inclined surface 29. The jaws III are secured in the housing 9 by means of screwed cover plate 25,

A hub 21 on housing 9 is shaped to fit in the bore 2' in the bed plate I, which bore defines the terminus of the channel 5. The housing 9 is centrally bored as at 22 to receive the projectile and the lower face of the hub 2| is slotted from a diameter of the bore 22 outward to accommodate the upper stepped portion 23 on paddle B. In addition to stud bolts 8, the housing 9 is further keyed to the bed plate I by means of sector-shaped boss 24 fitting in a complementary depression 24 in the prominence 3 of the bed plate I.

The press member comprises a central rod 26 terminating in a circularflange 21 from which depends four pins 28 hearing a ring-shaped member 29 with slanting inner surface 30 corresponding to the slant surface 20 of the jaws. The pins 28 have a reduced shoulder 3| which is fitted into flange 21 and held there by screws 32. A reduced shoulder 33 on the lower ends of the pins 28 holds the ring 29 by threads 34. Screws 32 and threads 34 are subjected only to dead loads in the press head assembly when the latter is suspended. Attached by screws 35 to slant surface 30 on press ring 29 and maintaining the slant thereof is a series of inserts 36 of hardened material for engagement with the slant surface 20 of jaws H].

The press head is steadied by means of guide posts 3'! slidably engaging bores 38 in the ring 29. The posts 3! have reduced shoulders 39 fitted into bores 40 in bed plate I.

The operation is as follows: The band I! is applied loosely to the projectile either by wrapping a rectangular sheet about the band seat l8 or by slipping over the seat a cut section of tubing The projectile is then placed in the central opening 22 in the jaw housing and comes to rest on the paddle 6, as best seen in Figure 3. The upper press head is lowered and slant surfaces on inserts 35 in ring 29 acting on slant surface 20 on jaws I6 cause the latter to move radially inward of the housing 9 to press the band I! into place in its seat I3. When the press head is raised, springs 15 repel the jaws it freeing the banded projectile, and when the paddle 6 is retracted the projectile falls through bore 2. The paddle 6 is then reinserted and the press is ready to receive another projectile for band- 1 I claim:

1. A banding press for projectiles and the like comprising a generally ring-shaped press head mounted for axial travel and having its inner periphery inclined to the direction of travel and a receiving member for the projectile to be banded, located centrally of said ring-shaped press head and having generally T-shaped chambers, T-shaped band-pressing jaws mounted in said chambers, said chambers opening outwardly of the receiving member at the three extremities of the T-arms and slidable radially of said receiving member and of said press head, said jaws having a slant surface complementary to and engaging with the slant surface of said press head whereby axial motion of said press head is converted into radial motion of said jaws for press ing bands into projectiles and the like.

2. A banding press for projectiles and the like comprising a generally ring-shaped press head mounted for axial travel and having its inner periphery inclined to the direction of travel and a receiving member for the projectile to be handed located centrally of said ring-shaped press head a plurality of band-pressing jaws mounted therein and slidable radially of said receiving member and of said press head, said jaws having a slant surface complementary to and engaging with the slant surface of said press head whereby axial motion of said press head is converted into radial motion of said jaws for pressing bands into projectiles and the like, said jaws being generally "I'- shaped and said housing comprising generally- T-shaped chambers to accommodate the jaws, said chambers opening outwardly of the housing at the three extremities of the T arms, a bed plate fastened to the side of the receiving member exposing the bottom of the T jaws and bearing plates in the bed plate to facilitate sliding of the jaws thereon.

3. A banding press as in claim 2 comprising a channel in the bed plate and a paddle slidable in the same to underlie the projectile or the like when received in the housing.

WILLIAM L. CARTER.

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