US3142226A - Loading tray for recoiling gun - Google Patents

Loading tray for recoiling gun Download PDF

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Publication number
US3142226A
US3142226A US257999A US25799963A US3142226A US 3142226 A US3142226 A US 3142226A US 257999 A US257999 A US 257999A US 25799963 A US25799963 A US 25799963A US 3142226 A US3142226 A US 3142226A
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United States
Prior art keywords
tray
shaft
spring
gun
ramming
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US257999A
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English (en)
Inventor
Carlsson Arent Gustav
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saab Bofors AB
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Bofors AB
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Publication date
Application filed by Bofors AB filed Critical Bofors AB
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A9/00—Feeding or loading of ammunition; Magazines; Guiding means for the extracting of cartridges
    • F41A9/01—Feeding of unbelted ammunition
    • F41A9/06—Feeding of unbelted ammunition using cyclically moving conveyors, i.e. conveyors having ammunition pusher or carrier elements which are emptied or disengaged from the ammunition during the return stroke
    • F41A9/09—Movable ammunition carriers or loading trays, e.g. for feeding from magazines
    • F41A9/10—Movable ammunition carriers or loading trays, e.g. for feeding from magazines pivoting or swinging
    • F41A9/13—Movable ammunition carriers or loading trays, e.g. for feeding from magazines pivoting or swinging in a vertical plane
    • F41A9/16—Movable ammunition carriers or loading trays, e.g. for feeding from magazines pivoting or swinging in a vertical plane which is parallel to the barrel axis

Definitions

  • This invention relates to recoiling guns and, more par ticularly, to a recoiling type gun having a loading tray that is guided by parallel levers for movement between a position in which the round is rammed into the breech of the gun and a position in which the recoiling parts can freely pass the loading tray.
  • the present invention is a continuation-in-part ap plication of co-pending application Ser. No. 20,758 filed April 7, 1960.
  • the fore going object is achieved by providing the loading tray with a spring actuated rammer which is cocked during the first part of the movement of the loading tray toward the ramming position, and which is released during the last part of such movement.
  • the loading tray is supported in a manner which causes it to move approximately in the ramming direction simultaneously with its movement toward the ramming position.
  • FIG. 1 is a perspective view, with parts broken away, of the loading tray assembly, the loading tray being shown in its elevated or loading position.
  • FIG. 2 is an enlarged perspective view, with parts broken away, of a source of spring force in the assembly for moving the loading tray into and out of the ramming position.
  • FIG. 3 is a perspective view of the loading tray as sembly showing the tray in its lowered or ramming position.
  • FIG. 4 is a diagrammatic view of a sub-assembly in the loading tray assembly compensating for changes in the distribution of the masses due to changes in the elevational position of the gun.
  • FIG. 5 is a diagrammatic view of the ramming operation in one stage of the operation.
  • FIG. 6 is a similar diagrammatic view showing the ramming operation in another stage of the operation.
  • FIG. 7 is an enlarged fragmentary view of the ram mer control in the loading tray assembly.
  • the loading tray assembly as exemplified is shown in operative association with a recoiling gun.
  • the gun is only shown to the extent that is necessary to the understanding of the invention and should be visualized as being conventional.
  • a frame plate 1 which is carried by an elevating part of the gun and a breach ring 2 which constitutes part of the recoiling assembly of the gun.
  • a loading tray 3 is swingably mounted with respect to plate 1. and is supported for this purpose by four parallel levers 4, S, 6 and 7 which swing about pivots 70.
  • Levers 5, 6 and 4, 7 are linked by links 50 and 51 respectively, and levers 6 and 7 are linked on one end to each other and the tray structure by a hollow shaft 72.
  • the other ends of levers d and 7 are seated on shafts 18 pivotally mounted on an elevating part of the gun.
  • the loading tray is equipped in a conven tional manner with latches or clamps 8, 9, it and 11 which retain a round of ammunition placed upon the tray in its proper position to prevent displacement of the round while the loading tray is in motion. In the elevated position of the tray, which is shown in FIG.
  • the loading tray and the parts associated therewith are out of the path of the recoiling movement of the breech ring and in the lowered or ramming position of the tray, the round of ammunition placed on the tray is in alignment with the breech opening for ramming the round into the breech ring in a manner which will be more fully described hereinafter.
  • the loading tray supports a shaft 13 which is rotatable but spatially fixed in reference to the frame structure of the loading tray.
  • Shaft 13 mounts a rammer 12 which is fixedly secured on the shaft to swing the rammer rom a cocked position shown in FIG. 7 through its ramming arc.
  • the rammer is retained in its cocked position by any suitable means shown as a latch 60 pivotally mounted on an arm 61 which, in turn, is hinged at 62 to a part of the tray structure.
  • a spring 63 urges latch 60 into latching engagement with a nose 17 on rammer 12.
  • a pivotal lug 64 locks arm 51 and the components associated therewith in the shown position.
  • Release of rammer 12 may be effected by turning lug 64 manually or automatically out of engagement with arm 61.
  • Means for controlling the rammer in this manner are well known in the art and do not constitute part of the present invention. They are described for instance in Patent 2,700,539 to Aldrin.
  • a two-part drum is supported on shaft 13.
  • the drum comprises a cylindrical portion 14a which is secured to the tray structure and a generally cap shaped portion 14 at each end of the cylindrical portion.
  • Both caps 14 are rotatable in reference to shaft 13 and to cylindrical portion 14a.
  • Each cap accommodates a coil-type torsion spring 15 (the arrangement is the same at both ends of the drum formed by portions 14 and 14a and hence the arrangement of only one of the springs is shown and described.)
  • Spring 15 is secured at its inner end to shaft 13 and at its outer end to cap 14.
  • the cap is linked to lever 5 by means of a connecting link 16. Accordingly, a swinging movement of loading tray 3 and drum 14, from the elevated position of FIG. 1 into the ramming position of FIG.
  • lever 6 which is one of the levers about which the loading tray is swinging, is provided with a lug 19.
  • This lug may be secured either directly to the lever, or as shown it may be secured to shaft 18 on which lever 6 is mounted. The lug strikes against a stationary buffer 20, thus braking the last part of the movement of the loading tray into its ramming position.
  • Movement of the loading tray from one position into the other in either direction is effected by torsion springs and 26 disposed in drums 21 and 22 mounted on opposite sides of the tray.
  • Each of the drums is rotatable about a shaft 23 and 24 respectively to which are secured levers 5 and 4 respectively.
  • a two-arm lever 45 is fixedly mounted on shaft 23 of drum 21 for rotation jointly with the shaft.
  • the torsion coil springs 25 and 26 are secured at their inner ends to shaft 23 and at their Outer ends to the drum.
  • a dog 27 on breech ring 2 will engage lever 45 and turn the lever in clockwise direction as seen in FIGS. 5 and 6, that is, dog 27 will engage the lower arm of the lever When the dog moves from a position to the right of the lever toward the left of FIG. 6.
  • the lever when turning in clockwise direction engages a nose 28 on drum 21 thereby rotating the drum also in clockwise direction.
  • Shaft 23 is prevented from turning by engagement of a lug 36 on lever 5 with a stationary catch 29.
  • drum 21 houses a third torsion coil spring 34, the outer end of which is secured to drum 21 and the inner end to a sleeve rotatable on shaft 23.
  • Spring 34 will be loaded at the same time as springs 25 and 26 when drum 21 is rotated in clockwise direction as previously described, but since sleeve 35 may remain stationary relative to a rotation of shaft 23 therewithin, the spring 34 will remain loaded when springs 25 and 26 are released upon rotation of shaft 23 due to a withdrawal of catch 29 from nose 30 on lever 5. Only when drum 21 is freed from catch 31, spring 34 can be partly unwound by rotating drum 21 and shaft 23 in counter-clockwise direction. Such unwinding of spring 34 is utilized to elevate the loading tray from its ramming position into the loading position of FIG. 1 in which it is secured by re-engagement of catch 29 with nose 30.
  • FIGS. 2 and 4 These compensating means can best be seen in FIGS. 2 and 4. They comprise lengthwise recesses 36 and 37 in the outer surface of sleeve 35. Recess 36 is engaged by a lug 38 axially extending from a sleeve 39 secured on shaft 23. For purpose of clarity of illustration, lug 38 is shown in FIG. 2 withdrawn from engagement with recess 36 but actually lug 38 is received Within the recess.
  • FIGS. 1 are lengthwise recesses 36 and 37 in the outer surface of sleeve 35. Recess 36 is engaged by a lug 38 axially extending from a sleeve 39 secured on shaft 23. For purpose of clarity of illustration, lug 38 is shown in FIG. 2 withdrawn from engagement with recess 36 but actually lug 38 is received Within the recess.
  • both sleeves 39 and 40 can perform a limited rotational movement in reference to sleeve 35 and thus also in reference to shaft 23.
  • Arm 40a is connected by links 42, 43, 44 and 46 to a nonelevating part 47 of the gun such as the trunnion bearings of the gun.
  • spring 34 coacts with springs 25 and 26, but as soon as the respective edge of recess 36 becomes engaged with lug 41 sleeve 35 is prevented from turning further in clockwise direction while shaft 23 continues its clockwise movement due to the action of springs 25 and 26 until the loading tray has completed its downward movement braked by engagement of lug 19 with buffer 20.
  • a loading tray adapted to carry a round of ammunition
  • a rammer including a spring carried by said tray, a shaft for movably supporting said rammer, movable means concentrically disposed relative to the axis of said shaft, said spring being connected at one end thereof to said shaft and being connected at another end thereof to said movable means, a plurality of levers movably connected to said tray for supporting said tray, means responsive to the recoil of the gun and connected to said levers for moving said tray and said rammer between spaced apart round loading and round ramming positions, means connected to said movable means and to said levers for loading said spring in the initial movement of said tray to said round ramming position, and means responsive to the position of said tray for releasing said loaded spring to have said rammer accelerate ramming the round in the ramming direction of the gun.
  • said recoil responsive means includes a rotatable shaft, means concentrically disposed relative to said shaft, and a spring connected to said shaft at one end thereof and connected to said concentrically disposed means at the other end thereof, said shaft and said concentrically disposed means being rotatable with respect to one another for loading said spring, said shaft being connected to said tray supporting means for actuating said tray supporting means, said shaft being rotated when said spring is unloaded, the recoil of the gun rotating said shaft relative to said concentric means.
  • a recoiling gun as set forth in claim 3, including another spring connected to a movable member supported on said shaft at one end thereof and connected to said concentric means, said other spring being loaded by relative movement between said concentric means and said shaft, means connected to said member and to said shaft for holding said member in place, said other spring being adapted to rotate said shaft in a direction to change the position of said tray from said ramming position to said loading position after said one spring is unloaded.
  • a recoiling gun as set forth in claim 4, including means disposed in the path of said member and engageable therewith as the elevation of the gun is increased to hold said member in place relative to said other spring, means for connecting said member to said shaft to have said other spring rotate said shaft when said other spring is unloaded.
  • said recoil responsive means includes a plurality of rotatable shafts, a plurality of drums concentrically supported respectively on said shafts, a plurality of springs connected to each of said shafts at one end thereof and connected respectively to each of said drums, said shafts being connected to said tray supporting means for actuating said tray supporting means, a sleeve rotatably supported on each of said shafts, another spring connected to said sleeve at one end thereof and to said drum at an other end thereof, said shafts being rotatable with respect to said drums for loading said springs, said drums being rotated in one direction relative to said shafts due to the recoil of the gun for loading said springs, locking means for holding said drum in place when said springs are loaded, said shafts being adapted to be rotated in another direction with said drums, a rotatable lever connected to said sleeves, said lever being rotatable in accordance with the elevation of the gun for controlling

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)
US257999A 1959-04-08 1963-02-12 Loading tray for recoiling gun Expired - Lifetime US3142226A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE334059 1959-04-08

Publications (1)

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US3142226A true US3142226A (en) 1964-07-28

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US (1) US3142226A (bs)
BE (1) BE589536A (bs)
CH (1) CH382033A (bs)
GB (1) GB868949A (bs)
NL (3) NL6514512A (bs)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3369454A (en) * 1965-05-06 1968-02-20 Bofors Ab Device for feeding cartridges deposited in a twin cartridge magazine of a gun
US4079659A (en) * 1975-09-12 1978-03-21 Ab Bofors Device for transferring ammunition for tank

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2837303C2 (de) * 1978-08-26 1983-12-15 Thyssen Industrie Ag, 4300 Essen Vorrichtung für Munitionslagerung und -transport bei einem Panzerfahrzeug mit einem scheitellafettierten Geschütz

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1753850A (en) * 1927-06-22 1930-04-08 Schneider & Cie Loading device for semiautomatic naval guns
US2851928A (en) * 1955-02-14 1958-09-16 Bofors Ab Loading mechanism for a non-automatic gun

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1753850A (en) * 1927-06-22 1930-04-08 Schneider & Cie Loading device for semiautomatic naval guns
US2851928A (en) * 1955-02-14 1958-09-16 Bofors Ab Loading mechanism for a non-automatic gun

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3369454A (en) * 1965-05-06 1968-02-20 Bofors Ab Device for feeding cartridges deposited in a twin cartridge magazine of a gun
US4079659A (en) * 1975-09-12 1978-03-21 Ab Bofors Device for transferring ammunition for tank

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NL6514512A (bs) 1966-01-25
CH382033A (de) 1964-09-15
NL120670C (bs) 1900-01-01
BE589536A (fr) 1960-08-01
NL249954A (bs)
GB868949A (en) 1961-05-25

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