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Патент USA US2405901

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Aug- 13, 1946.v
D. J. PATTERSON
2,405,901
HAMMER CONTROL MECHANISM
Filed 001;. 23, 1944
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Patented Aug. 13, 1946
2,405,901
UNITED STATES PATENT OFFICE
2,405,901
HAMMER CONTROL MECHANISM
Donald J. Patterson, Los Angeles, Calif., assignor
to Simplex Time Recorder 00., Gardner, Mass,
a corporation of Massachusetts
1
Application October 23, 1944, Serial No. 559,967
6 Claims. (Cl. 234-43)
2
This invention relates to recorders by which a
time record may be stamped on a payroll card
55 engaging a lower contact 56 when in normal
position and an upper contact 5'! when the sole
or other desired sheet.
noid 4| is energized and the plunger 5| is ,moved
It is the general object of my invention to pro
upward. The hammer solenoid 43 is connected
vide improved means for preventing the making 5 by a Wire 63 to the lower contact 53, and the"
of more than one impression on a record card or
spring plate 22 is connected by a wire 5| to the
sheet at a single presentation thereof.
upper contact 51.
To the accomplishment of this general object,
The plunger ‘H3 in the solenoid coil 43 is con
I provide novel means effective to open the ham
nected to actuate any suitable hammer mecha
mer circuit after a single impression has been
nism, such as is shown, for instance, in prior
made, and to hold the circuit open until the
Patent No. 2,102,771, issued December 21, 1937.
card has been withdrawn a substantial distance
Such mechanism forms no part of the present
from its stamping position.
invention.
My invention further relates to arrangements
Having described the details of construction
and combination of parts which will be herein
Ll and the electrical connections of my improved
after described and more particularly pointed out
control mechanism, the operation thereof is as
in the appended claims.
follows:
A preferred form of the invention is shown in
The card C is inserted in the guides It] and is
the drawing, which is a diagrammatic view illus
pushed downward to engage the card support l2
trating the construction and operation of my
and move the support a limited distance down
improved control mechanism.
ward after such engagement. Such ?nal down
In the drawing I have shown portions ll! of a
ward movement swings the lever i4 and depresses
card guide in which a card C is inserted from the
the spring plate 20. The contacts 30 and 32 are
top in the usual manner and is moved downward
?rst engaged, after which the contacts 3| and 34
until it engages a card rest or abutment l2. The 25
abutment I2 is pivoted at |3 to a lever l4, which
in turn is pivoted at l5 to a plate I6.
The card support I2 and plate l6 may consti
tute a movable unit which is shiftable vertically
to position records in desired spaces on the card 30
C, but this movable mounting of the support l2
and plate is forms no part of my present inven
tion and is not illustrated herein.
A spring plate 20 is mounted on a block 2| ?xed
on the plate l6, and a second spring plate 22
is similarly mounted below the block 2|, which
block is of non-conducting or insulating material.
The plate 20 has contacts 30 and 3| on its under
are engaged.
’
Engagement of the contacts 3| and 34 com
pletes a circuit from the line wire L through con
tacts 3| and 34, wire 44, wire 45, spring plate
43, contacts 55 and 56 and wire 60 to the ham
mer solenoid 43, which in turn is connected
through branch wire 42 and wire 45 to the line
wire L’. The hammer solenoid is thus energized
and an impression is stamped on the card.
A circuit is also closed through the contacts
3| and 34, wire 44, holding solenoid 4| and wire
40 to the line wire L’, thus energizing the sole
noid __4|. This moves the double contact 55 to
break the hammer circuit through the contact 56
face and the plate 22 has a contact 32 on its
after a single blow, and to engage the upper con
upper face. Another contact 34 is mounted on 40 tact 51. A holding circuit is completed by this
a ?xed insulating block 35 and is positioned for
engagement by the contact 3|. The lever M has
a non-conducting end plate 37 engaging the
latter engagement, the circuit being from the line
wire L through contacts 35 and 32, spring plate
22, wire 6|, contacts 57 and 55, spring plate 45
spring plate 20.
and wires 45 and 44 to the holding solenoid 4| and
A line wire L is connected to the spring plate 45 by wire 40 to line wire L’. This maintains the
20 and a second line wire L’ is connected by a
solenoid 4| active and at the same time holds
wire 40 to a relay solenoid 4| and by a branch wire
the hammer solenoid 43 inoperative, even if the
42 to a hammer solenoid 43. The solenoid 4| is
contacts 3| and 34 remain closed. A single blow
also connected through a wire 44 to the contact
only of the hammer mechanism can thus be
34 and by a branch wire 45 to a spring plate 46 50 delivered.
mounted on a ?xed insulating block 41.
The hammer solenoid circuit remains broken
The spring plate 46 is connected by a link 50
until the card C is lifted far enough to allow
to the plunger 5| of the relay solenoid 4|. The
separation of the contacts 30 and 32, which ob
plunger 5| is normally drawn downward by a
viously involves prior separation of the contacts
spring 52. The plate 46 has a double contact 55 3| and 34. Consequently, a second impression
2,405,961
3
.
cannot be made On the card C‘ until the card
has been lifted far enough to permit the card
circuit jointly, said contacts being so positioned
and connected that the holding solenoid circuit
support l2, lever iii and spring plate 20 to re
turn to their original raised positions, and until
downward pressure is thereafter applied a sec
ond time to the card.
I thus effectually prevent the accidental mak
and substantially raised position.
is closed with the hammer solenoid circuit and
is maintained closed after said hammer sole
noid circuit is broken and until said card-oper
ated member is returned substantially to initial
4. In a time recorder, a control system com
ing of two impressions on a card, as has here
prising
a card-actuated switch member having
tofore frequently taken place when a card was
somewhat loosely held and was very slightly 10 a substantal operating movement, a hammer
actuating solenoid, a circuit therefor, a holding
raised from stamping position. With the pres
ent construction, a substantial and de?nitely in
tended raising of the card is necessary before a
second impression can be made.
Having thus described my invention and the
advantages thereof, I do not wish to be limited
to the details herein disclosed, otherwise than
as set forth in the claims, but what I claim is:
1. In a time recorder, a hammer-actuating
solenoid, a circuit therefor, a holding solenoid
effective to break said hammer circuit, a circuit
for said holding solenoid, and a card-depressed
switch member having a ?rst contact in the
holding solenoid circuit only and a second con
tact in the holding solenoid circuit and in the
hammer solenoid circuit jointly, said two con
tacts being closed and opened successively by said
switch member, with the contact which is in the
holding solenoid circuit only closing ?rst and
opening last.
2. In a time recorder, a hammer-actuating
solenoid, an operating circuit therefor, 'a holding
solenoid effective to break said hammer circuit,
an operating circuit for said holding solenoid,
and a single card-operated switch member ef
fective by a continued downward movement to
close the holding circuit at one point and to close
the holding solenoid and hammer solenoid cir
cuits at a second point, said holding solenoid be—
ing immediately operative to break the hammer
solenoid circuit after a single impression, and
said holding solenoid circuit being maintained
until the card operated switch member is re
turned substantially to initial and fully raised
position.
solenoid effective to break said hammer solenoid
circuit, a circuit for said holding solenoid, said
circuits being closed in parallel, and a second
switch member actuated by said holding solenoid l
to break said hammer solenoid circuit and to
simultaneously close the holding solenoid circuit .
through a parellel connection, said holding sole
noid circuit being thereafter opened during the
?rst part of the return movement of said card
actuated switch member and said holding sole
noid circuit being broken at the parallel connec
tion during further return movement of said
card-actuated switch member to initial raised
position.
5. In a time recorder, a hammer-actuating
solenoid, a circuit therefor, a holding solenoid
effective to break said hammer circuit, a circuit
for said holding solenoid, and a card-depressed
switch member having a ?rst contact in the
holding solenoid circuit only and a second con
tact in the holding solenoid circuit and in the
hammer solenoid circuit jointly, both circuits
being closed by extreme downward movement of
said switch member, said hammer solenoid cir
cuit being thereafter opened by said holding
solenoid while said switch member remains fully
depressed, and said holding solenoid circuit re
maining closed and said hammer solenoid cir~
cuit remaining open until said switch member is
restored substantially to its initial raised posi
tion.
6. In a time recorder, a hammer-actuating
solenoid, a circuit therefor, a holding solenoid
~ eifective to break said hammer circuit, a circuit
for said holding solenoid, and a card-depressed
switch member operative to close both circuits
solenoid, an operating circuit therefor, a hold
on extreme downward movement and operative
ing solenoid effective to break said hammer cir
to maintain the holding solenoid circuit closed
cuit, an operating circuit for said holding sole
until said switch member returns substantially to
noid, and a card-operated member having a 5 0 initial raised position.
contact in said holding solenoid circuit only and
having an additional contact in said holding
DONALD J. PATTERSON.
solenoid circuit and in said hammer solenoid
3. In a time recorder, a hammer-actuated
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