IMPROVEMENTS IN BREECH LOADING WIDE ADMO
Year: 1875

page_text: LETTERS PATENT to Linus. O. Thayer, of the City of Montreal,
Province of Quebec, Dominion of Canada, Doctor of Medecine, for
T
HTPR-ADME
the Invention of "
"IMPROVEMENTS IN BREECH LOADING WIDE ADMO
COMPLETE SPECIFICATION filed by the said Linus O. Thayer at the
Office of the Commissioners of Patents, with his Petition and
Declaration, on the 6th February 1875, pursuant to the 9th Section
of the Patent Law Amendment Act, 1852.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, LINUS
O. THAYER, of the City of Montreal, Province of Quebec, Dominion of
Canada, Doctor of Medicine, send greeting.
WHEREAS I am in possession of an Invention for "IMPROVEMENTS IN
BREECH-LOADING FIRE-ARMS," and have petitioned Her Majesty to grant
unto me, my executors, administrators, and assigns, Her Royal Letters
Patent for the same, and have made solemn Declaration that I am the
first and true Inventor thereof.

page_text: Figure No. 2 is a side elevation also representing the manner of
cocking the gun by drawing back the bolt, the same moment carrying
along the extractor and throwing out the exploded cartridge, thus
making room for a loaded one.
A is the barrel, of any ordinary construction, screwed into the shoe b,
and the stock into which the frame d is tenoned and fastened by a
screw traversing the frame stock and shoe, as seen in Figure 1, or any
other convenient or suitable manner; d is the frame seen in position
in Figures 1 and 2, and Figures 3 and 4 side elevation and top view,
entering into a tenoned cavity by its anterior extremity h', and by its
posterior extremity screwed into the shoe; e, the extractor, of which
Figure 11 is front, side, and profile view, and in position Figures 1
and 2 having one of the points thick and going off to a knife edge to the
other acting in a corresponding incision in the barrel f, the bolt of which,
Figure 5, is a side and end elevation, and Figure 6 a front view.
In Figure 5 is seen the recess which contains the needle, and the
rectangular and circular hole for the head of the tumbler of the con-
figuration, as seen in Figure 5; g, the needle, of which d¹ is the point
of the striker screwed into and igniting the cartridge, and Figure 7 is a
side elevation, and also seen in the bolt in Figures 1 and 2; h, the
tumbler; j, the notch receiving the narrow end of the V spring; O and
K, the notch engaging with the extremity n of 1, the trigger, see Figures
1, 2, and 8.
The trigger is more particularly described in Figure 9, and Figure 12
represents P, the sear spring; O, the V mainspring; q, the cut in the
framed for the wide extremity of the spring O; r, the head of the
tumbler h, seen in Figures 1 and 2 in a side elevation, and front and side
in Figure 8; c', the wedge-shaped protuberance on the lower end of the
tumbler; 8, the recess in the needle 9 which engages with the head r of
the tumbler, of which Figure 7 is a side elevation; t, a screw to retain
the needle in the bolt, as seen in Figure 5; u, the anterior portion of the
frame d-tenoned into or otherwise fastened into the stock; V, the
cartridge or shell seen in different positions, Figures 1 and 2; W,
the cavity for the ramrod; X, the extremity of the extractor which:
engages in the recess y of the bolt; Z, the crescentic end of the
.

page_text: :
1st. The new combination of the following pieces; the trigger 1; the
spring p; the tumbler h; the spring O; the bolt f; the needle g;
the shoe h, with the extractor constructed, arranged, and working as
described.