US1163812A - Lock mechanism of breech-loading guns. - Google Patents

Description

A. T. DAWSON & G. T. BUCKHAM.

LOCK MECHANISM OF BREECH LOADING GUNS.

APPLICATION FILED IULY3I. 1914.

1,163,812. Patented Dec. 14, 1915.

3 SHEETS-SHEET I.

A. T. DAWSON & G. T. BUCKHAM.

LOCK MECHANISM OF BREECH LOADING suws.

APPLICATION FILED JULY3Y. ISM.

1,163,812, Pamnted Dec. 14, 1915.

3 SHEETS-SHEET 2.

wimusw- A. T. DAWSON & G. T. BUCKHAM.

LOCK MECHANISM OF BREECH LOADING GUNS.

APPLICATION man .IULY3I. 1914.

Pamnted- Dec. 14, 1915.

3 SHEETS-SHEET 3- ARTHUR TREVOR DAWSON AND GEORGE THOMAS BUCKHAM, OF WESTMINSTER,

LONDON, ENGLAND,

ASSIGNORS TO VIGKERS LIMITED, 01 LONDON, ENGLAND.

LOCK MECHANISM OF BREECH-LOADING GUNS.

Specification of Letters Patent.

Patented Dec. 14, 1915.

Application filed. July 31, 1914. Serial No. 854,247.

To all whom it may concern:

Be it known that we, Sir ARTHUR TREVOR Dawson, knight, and GEORGETHOMAS BUCK- HAM, both subjects of the King of Great Britain, residing at Vickers House, Broadway. Westminster, in the county of London, England, have invented certain new and useful Im rovements in or Relating to the Lock Mechanism of Breech-Loading Guns, of which the following is a specification.

This invention relates to lock mechanism of the kind in which the lock frame is capable of moving laterally in a box slide on the breech screw carrier and in which a repriming device is employed, the said device comprising a primer magazine or hopper and a bolt wh ch is carried bv the laterally movable lock frame and by the movements it receives from a cocking hand lever, operates to extract the used primer from its chamber in the vent axial and insert a new one in its place from the magazine or hoptracted, the bolt sleeve will lie beneath the the magazine or hopper exit opening of will fall through the from which a primer mouth or opening in thelock frame on to the top of the bolt sleeve, in which position the said primer will remain during the movement of the lock frame into its closed position. Upon the lock frame reaching its closed position, the cocking hand lever may be actuated to withdraw the bolt whereupon the new primer will fall into the bolt-way in front of the bolt ready to be pushed into the primer chamber of the vent axial when the bolt is returned to its forward position.

In order that the said invention may be clearly understood and readily carried into effect, we will describe the same more fully with reference to the accompanying drawings, in which Figures 1 and 2 are respectively a rear elevation and a plan showing a constructional form of our improvements. Figs. 3 and 4 are sections taken approximately on the lines 1, 1 and 2, 2 of Fig. 1. Figs. 5, 6

and 7 are more or less diagrammatic sectional rear elevations showing respectively the lock frame closed with the bolt in its forward position, the lock frame open withthe bolt still in the forward position, and

the lock frame again closed with the bolt a C is the box slide and D the laterally movable lock frame provided with the aforesaid mouth or opening D.

E represents the primer magazine or hopper, F the bolt employed for inserting the primers into the primer chamber of the vent axial, F the bolt sleeve, and F the cocking hand lever which operates through an arm F upon the bolt sleeve for unlocking and retracting the bolt and moving it to the forward and locked position to insert the primer and leave the striker F cocked.

In the example shown, the hopper E is detachably mounted in an opening in the box slide and as is clearly seen in Figs. 5 to 7 it is provided with a vertical partition E which divides the hopper into two chambers. The hopper is retained in position by a spring pin E When the parts are in the firing position as shown in Fig. 5, the mouth or opening D in the lock frame D is some distance to the left of the exit opening of the hopper E. After the gun has been fired (or in the event of a misfire) the lock frame is moved laterally to the right, and the opening D then comes beneath the exit opening of the hopper with the result that the lowermost primer in the left hand chamber of the hopper falls upon the bolt sleeve as shown in Fig. 6, after the used or defective primer has been ejected. The return movement of the lock frame to the closed position causes the primer immediately above that in the opening D of the lock frame, to be forced back into the right hand chamber of the hopper, the upper surface of the lock frame then closing the exit opening of the hopper. When the lock frame reaches its closed position the cocking hand lever F is operated to unlock and retract the bolt thereby allowing the primer that was resting upon the bolt sleeve to fall into the bolt-way in front of the bolt head. Displacement of the cocking hand lever in the reverse direction then moves the bolt forwardly and looks it to the lock frame, at the same time inserting the new primer into its chamber and leaving the striker F in the cocked condition ready to be released to fire the gun when desired. A projection may be provided on the carrier to prevent the cocking lever from being operated until the lock frame occupies its completely closed position.

The opening of the lock independently of the movement of the breech actuating hand lever may be effected by a lanyard lever H which is formed with an arm I). that engages between. .collars H on the guide bolt H Thus when the lanyard lever H is pulled it withdraws the guide bolt H and permits the lock to move. This movement of the lanyard lever H also causes an extension H- thereon to engage with ashoulder or projection F 5 on a casing forming part of the striker F (Fig. 4) and thus retract the said striker.

\Vha't we claim and desire to secure by Letters Patent of the United States is 1. In the lock mechanism of ordnance, the combination with a stationary primer magazine, of a movable lock frame and a firing bolt carried by the lock frame, said lock frame having an opening for the reception of a primer from the magazine during the opening movement of the lock frame.

2. In the lock mechanism of ordnance, the combination with a stationary magazine, of a movable lock frame, a firing bolt and bolt sleeve carried by the lock frame, said lock frame having an opening above the forward portion of the bolt sleeve through which a primer from the magazine falls on to the top of the bolt sleeve during the opening movement of the lock frame.

3. In the lock mechanism of ordnance, the combination with a stationary primer magazine, of a laterally movable lock frame, and a firing bolt carried by the lock frame, said lock frame having an opening for the reception of a primer from the magazine during the opening movement of the lock frame. 4. In the lock mechanism of ordnance, the combination with a stationary magazine. of a laterally movable lock frame, a firing bolt and bolt sleeve carried by the lock frame, said lock frame having an opening above the forward portion of the bolt sleeve through which a primer from the magazine falls on to the top of the bolt sleeve during the opening movement of the lock frame.

5. In the lock mechanism of ordnance, the combination with a stationary magazine, of a movable lock frame, a firing bolt and bolt sleeve carried by the lock frame, said lock frame having an opening above the forward portion of the bolt sleeve through which a primer from the magazine falls on to the top of the bolt sleeve during the opening movement of the lock frame, means for retracting the bolt when the lock frame reaches its closed position, the primer then falling in front of the bolt, and for moving the bolt forward to insert the primer into its chamber.

6. In the lock mechanism of ordnance, the combination with a stationary magazine, of a laterally movable loc-k frame, a firing bolt and .bolt sleeve carried by the lock frame, said lock frame having an opening above the forward portion of the bolt sleeve through which a primer from the magazine falls on to the top of the bolt sleeve during the opening movement of the lock frame, means for retracting the bolt when .the lock frame reaches its closed position, the primer then falling in front of the bolt, and for moving the bolt forward to insert the primer into its chamber.

In testimony whereof we affix our signatures in presence of two witnesses.

ARTHUR TREVOR DAWSON. GEORGE THOMAS BUOKHAM. Witnesses:

HENRY KING, ALFRED PEAKS.

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