Improvements in Cash Register Machines.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in Cash Register Machines.
We, THE NATIONAL CASH REGISTER COMPANY LIMITED, of 337, Strand, W.C.,
London, Manufacturers, do hereby declare the nature of this invention a com-
munication to us from abroad by The National Cash Register Company, of
Dayton, in the State of Ohio, "United States of America, Manufacturers,
to be as follows:-
This invention relates to cash register machines and more particularly to im-
provements in devices for allowing the operation of two keys in one bank. In a
machine in which the keys of each bank are placed one above the other radiating
from a centre in a vertical plane the three lower keys co-operate with the usual
detent frame while the remaining keys of the bank are of such length as not to
engage said detent and are provided with laterally projecting pins. A segmental
locking detent is mounted in proximity to the protruding ends of the pins and
is formed with a series of inclined slots arranged to receive said protruding ends.
This plate is also formed with elongated slots through which project screws for
securing the plate movably in position so that it can slide in a path which is part
of a circle. A guard plate having radial slots for the reception of the ends of the
pins, is mounted over the detent to assist in holding the plate in position and
form a guide means for said pins. The lower end of the detent plate rests upon a
movable latch bar which projects at its rear into proximity to a cam mounted on
a rotary shaft so as to force the latch bar forward during each revolution.
The pins of the keys also operate a segment pivoted about in a line with its
periphery and formed with a rack segment which meshes with a partial gear wheel
secured to a sleeve. This sleeve carries a printing segment and a star aligning
segment, the latter arranged to be engaged by an aligning pawl operated by a cam
on the aforesaid rotary shaft.
T 1
1000
HERBERT HADDAN & Co.,
Agents to Applicants.
We, THE NATIONAL CASH REGISTER COMPANY LIMITED, of 337, Strand, W.C.,
London, Manufacturers, do hereby declare the nature of this invention, a com-
munication to us from abroad by The National Cash Register Company, of
Dayton, in the State of Ohio, United States of America, Manufactur

page_text: and in what manner the same is to be performed to be particularly described
and ascertained in and by the following statement:-
This invention relates to cash register machines and more particularly to
improvements in devices for allowing the operation of two keys in one bank, in
such machines for example as are described in the Specifications of Letters Patent
No. 5238 of 1891, No. 18079 of 1892 and No. 9400 of 1897. In a machine of this
character in which the keys of each bank are placed one above the other radiating
from a centre in a vertical plane as illustrated in the annexed drawings in Fig. 1
in sectional side elevation and Fig. 2 which shows a detail of the new construction,
the three lower keys 1 co-operate with the usual detent frame while the remaining
keys 2 of the bank are of such length as not to engage said detent and are provided
with laterally projecting pins 3. A segmental locking detent 4 (Fig. 2) is mounted
in proximity to the protruding ends of the pins 3 and is formed with a series of
inclined slots 5 arranged to receive said protruding ends. This plate is also
formed with elongated slots 6 through which projects screws 7 for securing the
plate movably in position so that it can slide in a path which is part of a circle.
A guard plate 8 having radial slots 9 for the reception of the ends of the pins 3,
is mounted over the detent 4 to assist in holding the plate in position and form
a guide means for said pins. The lower end of the detent plate rests upon a
movable latch bar 10 which projects at its rear into proximity to a cam 11 mounted
on the rotary shaft 12 so as to force the latch bar forward during each revolution.
The pins of the keys 2 also operate a segment 13 pivoted about in a line with
its periphery and formed with a rack segment 14 which meshes with a partial
gear wheel 15 secured to a sleeve 16. This sleeve carries a printing segment and
a star aligning segment 17, the latter arranged to be engaged by an aligning
pawl 18 operated by a cam 19 on the aforesaid rotary shaft 12.
It will be seen from the above that one of the keys 1 and also one of the keys 2
may be depressed during a single operation of the machine and thus cause to be
printed simultaneously designations representing the operated keys..
Having now particularly described and ascertained the nature of this
invention and in what manner the same is to be performed we declare that what
we claim is :-
1. In a cash register machine in which the keys of a bank radiate from a centre
for example as indicated in the Specifications of Letters Patent No. 5238 of 1891
No. 18079 of 1892 and No. 9400 of 1897 the construction of said keys so that some
of them co-operate with the usual detent frame while the others do not engage said
detent but co-operate with a detent plate 4 so that one of each set of keys in the
bank may be depressed during a single operation of the machine.
2. In a cash register machine of the nature substantially as herein before
described the construction of detent plate 4 with slots 5 to co-operate with pins 3
on those of the keys of a bank which do not co-operate with the usual detent
frame, for the purpose set forth.
3. The construction of the parts substantially as herein described and illus-
trated and for the purpose set forth.
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021
1
1000
HERBERT HADDAN & Co.,
Agents to Applicants, 18, Buckingham Street, W.C.