Waaine Catch

Allen Thurber Drop Breech Rifle

By James M. Triggs

Rolling-Block Rifle

37,501 was granted to Leonard Geiger covering a hinged or 'split-breech' gun action. That this basic action, with many subsequent improvements, remained in production through the 1930's is remarkable.

The first arms made under the Geiger patent were 20,000 carbines chambered for the .56-50 Spencer rim-fire cartridge. Delivered in 1865, these carbines were purchased by the U. S. Government under a contract granted to E. Remington & Sons of Ilion, N. Y. At the time this contract was granted, Remington production facilities were so involved with other government commitments that the carbines were actually manufactured by the Savage Revolving Fire Arms Co., of Middletown, Conn., under Remington license and with Remington-designed machinery.

The original Geiger action was substantially improved by Remington employee Joseph Rider. His initial patent No. 45,123 was granted on Nov. 15,

1864. Rider's influence as co-inventor was so profound in respect to this action that Remington-Rider and Remington Rolling-Block are virtually synonymous to the arms student or collector.

A host of other inventors effected changes and improvements in the basic action during its long production history. It was in effect a workhorse in the Remington line, being used in rifles, shotguns, and single-shot pistols. That it successfully bridged the smokeless powder era is attested by the fact that the Remington Rolling-Block rifle was regularly chambered for such cartridges as the .30-30 Winchester, 8 mm. Lebel, 7 mm. Mauser, and even the ,30-'06. Some of the largest purchases of Remington single-shot rifles were by foreign governments desiring an inexpensive, serviceable, and a simple military weapon. Military rifles with the Remington-Rider action were made at Springfield Armory and by Denmark in the Danish government arsenal in

Copenhagen. Rifles and shotguns with this basic action are still made in Scandinavia.

As to the 'shootability' of these rifles, John R. Lewis, Jr., a patent attorney for Remington Arms Co., Inc., states: . . with certain exceptions in the later models these rifles were designed for blackpowder and most of the foreign military rolling-blocks lately returned to this country are from 50 to 85 years old; during which time they have been more or less indifferently maintained. A particular caution is in order with respect to 7 mm. rolling-block rifles. I have checked head-space on many of the rifles in this caliber and almost without exception they were within limits as defined by the manufacturing gauges, but this does not mean that they are within head-space tolerances for modern ammunition. Apparently these 7 mm. military rolling-block rifles were manufactured to use some now obsolete military cartridge with longer head-to-shoulder

Remington Rolling Block Extractor

dimensions than the 7 mm. sporting cartridge standardized by SAAMI (Sporting Arms & Ammunition Manufacturers Institute) about 1920.

"Since the modern 7 mm. sporting cartridge requires the same headspace as the .257 Remington-Roberts, either a modern 7 mm. or the .257 Reming-ton-Roberts gauge may be used to check a rifle. It will be found that it is a rare 7 mm. military rolling-block rifle which does not have grossly excessive headspace for modern 7 mm. ammunition. In firing such rifles with suitable precautions I have not encountered any head separations but almost invariably modern cartridges fired in these rifles show on the wall of the case about 3/s" forward of the head the brignt ring or strained brass which is characteristic of an incipient head separation. This condition may be corrected by setting the barrel back one turn on the threads and rechambering, but this operation is difficult because of the nature of the clearance cut required for the extractor.

"Rolling-block rifles are interesting curios but should not be seriously regarded as shooting rifles unless their use is limited strictly to fresh ammunition of characteristics consistent with the period of their original design and manufacture."

James M. Triggs, a gun collector of Mamaroneck, N. Y., is a writer-illustrator.

Patent Shotgun Trigger And Hammer

ITo reploce hammer and breechblock in receiver, keep trigger pulled all the way back while inserting hammer with its nose forward in fired position as shown. Move hammer until its hole lines up with hammer pin holes in receiver. Slip hammer pin (31B) into hole in left of receiver, through hammer, and through hole in right of receiver. Cock hammer and replace breechblock and breechblock pin in like fashion

Breech Block And HammerRolling Block Split Breech Carbine

Parts Legend

2 This shows type of extractor (A) used in Remington Rolling-Block Rifle, U. S. Navy Model of 1869. Extractor is held in place in the slot (C) in the barrel by screw (B) which passes through receiver from the left side. This model also has a firing pin spring and firing pin retaining screw in the hammer nose. Also, in this Navy Remington the mainspring is provided with an anti-friction roller at the hammer end and a different type of ramrod stop is employed. Disassembly procedure for all rolling-block rifles, with the exception of these few variations, remains the same

Remington Rolling-Block Rifle Disassembly Procedure

Loosen button screw (34) and remove button (33) from left side of receiver (1). Cock hammer (32) and push out breechblock pin (31 A) from right to left. Lift out breechblock (27) with extractor (30) attached. Firing pin (28) can be removed from breechblock by drifting out firing pin retaining pin (29). Let hammer down all the way, remove hammer pin (3IB) and lift hammer (32) out of receiver (1).

The wooden fore-end (not shown in exploded view) may be removed by withdrawing ramrod (13) and removing barrel bands (8. 10 & 11).

To remove buttstock (not shown in exploded view), take out tang screw (35) and pull buttstock off to rear. Remove front and rear guard plate screws (16 & 17) and drop guard plate (15) out of receiver (1). All parts and springs contained within the guard plate may be removed if necessary by withdrawing their respective screws and retaining pins.

The arm is reassembled in reverse order. -wm

Interior parts of the rolling-block action are shown here in longitudinal-section to demonstrate their correct relative positions. Part numbers are keyed to part numbers in exploded view drawing

1. Receiver

2. Barrel

3. Rear sight assembly

4. Recoil stud

5. Recoil stud screw

6. Stock tip

7. Stock tip screw

8. Front band

9. Front band screw

10. Middle band & swivel

11. Rear band

12. Rear band screw

13. Ramrod

14. Ramrod stop

15. Guard plate

16. Front guard plate screw

17. Rear guard plate screw

18. Lever spring

19. Lever spring screw

20. Mainspring

21. Mainspring screw

22. Trigger spring

23. Trigger spring screw

24. Locking lever

25. Locking lever screw

26. Trigger 26A. Trigger pin

27. Breechblock

28. Firing pin

28A. Firing pin retractor 28B. Firing pin limit pin

29. Retractor pin

30. Extractor

31 A. Breechblock pin 31B. Hammer pin

32. Hammer

33. Button

34. Button screw

35. Tang screw

36. Buttplate

37. Buttplate screws (2)

38. Stock swivel

39. Stock swivel screws (2)

The Ruger carbine introduced in 1961 by Sturm, Ruger & Co., Inc., was the first factory-made shoulder arm to be chambered for the .44 Remington Magnum cartridge. Designed for hunting deer-class game within relatively short range, this gun is noteworthy for several design features.

It is gas-operated. When fired, powder gas, tapped through a small hole in the barrel, acts upon a floating short-stroke piston which strikes the front end of the slide, driving it to the rear to rotate and unlock the bolt, extract and eject the fired cartridge case, cock the hammer, and initially feed a fresh cartridge from the tubular magazine in the fore-

end. The energy of the compressed slide spring then forces the slide assembly forward to chamber the cartridge and rotate the bolt into locked position. This completes the firing cycle.

The tubular magazine holds 4 cartridges; with a cartridge in the chamber, capacity of the gun is 5 rounds.

The receiver is machined from a solid block of steel and is closed on top. It is drilled and tapped for commercial scope top mounts.

The 1816" barrel is button rifled and has 12 grooves with a twist rate of one turn in 38".

Nominal weight of the Ruger carbine is 5 lbs. 12 ozs.

Spencer Repeating CarbineScope Hole Plugs
Parts Legend

1. Barrel

2. Rear sight

3. Front scope base hole plug screws (2)

4. Cartridge guide plate screws (2)

5. Rear scope base hole plug screws (2)

6. Cartridge guide plate

7. Ejector

8. Ejector screw

9. Piston

10. Piston block plug

11. Piston block plug retaining pin (inner & outer pins)

12. Front sight

13. Barrel band

14. Barrel band screw

15. Recoil block

16. Recoil block bolt washer

17. Recoil block bolt

18. Receiver cross pin

19. Bolt

20. Extractor

21. Extractor spring

22. Extractor pivot pin

23. Firing pin retaining pin

24. Firing pin retaining spring

25. Firing pin

26. Slide

27. Slide handle

28. Slide spring

29. Magazine tube

30. Magazine follower

31. Magazine spring

32. Magazine plug

33. Magazine plug cross pin

34. Buttplate

35. Buttplate screws (2)

36. Receiver

37. Disconnector plunger

38. Disconnector plunger spring

39. Disconnector plunger spring screw

40. Lifter cam

41. Lifter cam spring

42. Lifter cam pin

43. Hammer spring, left

44. Hammer spring, right

45. Hammer spring retaining pin

46. Safety

47. Safety detent plunger

48. Safety detent plunger spring

49. Trigger

50. Trigger cross pin

51. Sear

52. Sear spring

53. Disconnector

54. Trigger pivot pin

55. Hammer pivot pin

56. Hammer

57. Hammer roller

58. Hammer roller pivot pin

59. Lifter latch

60. Lifter latch pivot pin

61. Lifter latch spring

62. Lifter latch plunger

63. Lifter dog

64. Lifter dog pivot pin

65. Lifter assembly

66. Cartridge stop flat spring

67. Cartridge stop flat spring retaining pin

68. Cartridge stop

69. Flapper spring

70. Cartridge stop coil spring

71. Flapper

72. Cartridge stop pivot pin

73. Trigger guard (trigger mechanism housing)

Note: Parts 37-73 are contained in trigger guard assembly

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  • pamphila
    How is hammer and trigger of a gun is made?
    8 years ago
  • klaus
    How does a remington rolling block work?
    8 years ago
    How does a extractor work in Falling block action rifles?
    7 years ago
  • kevin
    How does a lever action rolling block work?
    7 years ago
    How and what held the rim fire block secure on rolling block action?
    4 years ago

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