Improvements in Ticket Punches.
Year: 1892

page_text: j
Date of Application, 2nd Apr., 1892-Accepted, 4th June, 1892
COMPLETE SPECIFICATION.
-Improvements in Ticket Punches.
I JOHN SMITH COMRIE, Civil Engineer of 7 & 8 Great Winchester Street in
the City of London do hereby declare the nature of my said 'invention and in
what manner the same is to be 'performed to be particularly described and ascer-
tained in and by the following statement :-
The object of this invention is twofold, it has for its object partly to relieve from
strain the more delicate portions of the mechanism of ticket punches such as shown
in the Specifications of Letters Patent No. 14694 of 1886 and No. 19356, of 1890,
and partly to provide means for covering the sighthole of such punches (where the
index numbers become visible) when required.
My invention is illustrated in the accompanying drawings which in
Fig. 1 shows a ticket punch substantially such as set forth in the Specification of
Letters Patent No. 14694 of 1886 the casing being 'ömitted to show the internal
parts.
Fig. 2 is a similar view of the punch described in the Specification of the
Letters Patent No. 19356 of 1890.
'
Fig. 3 shows the opposite side of the punch 'illustrated in Fig.
removed.
with the cover
"Fig. 4 is an external view of the rear side of the punch shown in Fig. 2.
Fig. 5 is a section through Figs. 2 and 4 on the line X X with the casing and
bell in place but with the internal mechanism omitted.
In the punches as heretofore constructed considerable strain, was put upon the
counting mechanism when the bolt A (Figs. 1 and 3) or lever A¹ (Figs. 2, and 4)
was depressed without the previous insertion of a suitable ticket into the slot B
and the punches were by this reason liable to injury in the hands of a careless
person. To obviate this I provide the punches with a piece of sufficient strength
to bear any strain that may be liable to arise from the cause above indicated and
BO placed that it will prevent the pressure being transmitted to the counting
mechanism, thereby protecting the latter against damage.
The form shown in Fig. 1 is similar in general arrangement to that described in
Letters Patent No. 1469400 above referred to. In Fig. 3 of this last named
Specification is shown a bent lever or locking pawl J one arm whereof is capable
of engagement with the locking wheel unless pushed aside by the pin in the
punch D.
According to this invention I lengthen the lever J as shown in Fig. 1 of the
accompanying drawings and at its lower end hinge thereto a curved bar c, the
end of bar c acts upon a block E'sliding between the resistance pieces e e'. Now
when the bolt-A is depressed and there is 'no' ticket in the slot B the lever turns
on its fulcrum, pushes forward the block E under the lower end a of the bolt and
prevents further progress of the same ere any great strain can be put upon the
counting mechanism, all further pressure being borne by the block E.
In punches of the form described in the Specification of Letters Patent
No. 19356 of 1890, and shown in Fig. 2 of the drawings hereto annexed I apply
this part of my invention as follows: I so alter the shape of the pawl F, and
shorten the pin a that room is afforded between these parts for a push piece G.
The push piece G extends into a recess in the lever A wherein a bar H is pro-
vided to which, at h, is pivotted a bar K turning on the pin k. This bar answers
When the lever A¹
the same purpose as the block E previously herein described.
is depressed and no ticket has been inserted in the slot B the bar K is brought
down against the resistance block L and takes all further strain: if a ticket has
O been inserted the pin a acts on the push-piece G and through the bar H causes

page_text: bar K to swing on pink the lower end of K being carried forward (over the
locking bar M) so as to pass clear of the resistance piece L.
For covering the register or index whilst the punch is in use I employ a sliding
plate. In Figure 3 this plate is shown with its front part N covering the figures.
On the bolt O of the fock (in this case a lever lock) carries a pin engaging with a
slot P in the rear end of the plate, the latter being pivotted at Q. When the
bolt is raised, the pin will raise the plate as shown by a dotted line and arrow
and the register is uncovered.
In the form of punch shown in Figs. 2, 4, 5, the pin R serves to operate the
sliding plate N. A lug S is provided on the bell-cover. The pin R may engage
with either the hole t or the hole in such lug when in either of its extreme
positions. In the drawings the register is shown uncovered but when the pin R is
pushed in the direction of the arrows shown in Figs 4 and 5 it carries the plate N¹
over the sight hole. The pin and slide are suitably encased as appears at ŕ Figs. 4
and 5. The pin R may be connected with the lock and operate in conjunction
therewith.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what I
claim is
1.) In ticket punches the means for preventing unnecessary strain being put
upon the counting mechanism, or other delicate parts, consisting in a block E or
bar K preventing the progress of the bolt or lever, when no ticket has been inserted
into the punch but moved out of the way when a ticket is inserted before the bolt
or lever is depressed.
2.) In ticket punches such as illustrated in Figs. 1 and 3 the combination with
the punch D and bolt A of the pawl or lever J connected by the bar c with a
block E sliding between resistance pieces e el, all arranged and operating sub-
stantially as and for the purposes set forth.
3.) In ticket punches such as illustrated in Figs. 2, 4, and 5 the combination
with the lever A¹ the punch and pin a of the push piece G connected by a bar H
with a bar K capable of abutting against a resistance piece L, all arranged and
operating as and for the purposes set forth.
4.) In ticket punches the means for covering the index or register when desired,
substantially as specified.
5.) In ticket punches such as illustrated in Figs. 1 and 3 the combination with
the bolt of the lock of a plate N as and for the purpose set forth.
6.) In a ticket punch such as illustrated in Figures 2, 4, and 5, the combination
of the pin R the sliding plate N' and the lug S on the bell cover all as set forth
and described.
Dated this 2nd of April 1892.
BERNHARD DUKES,
226, High Holborn, London, Agent for the Applicant.