Improvements in and relating to Pumps, chiefly Coin Freed, and Designed for Inflating Pneumatic Tyres.
Year: 1898

page_text: Improvements in and relating to Pumps, chiefly Coin Freed, and
Designed for Inflating Pneumatic Tyres.
I, GEORGE BREWSTER GALLUP, of Greenville, in the County of Hudson and
State of New Jersey, United States of America, Journalist, do hereby declare the
nature of this invention, 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 pumps. The main immediate object of the invention,
generally stated, is to provide a practical, manual air pump equipped with .coin
controlled devices and designed to inflate the tires of bicycles. In the ordinary
practical use of the invention it is my purpose to fix pumps at various places con-
venient to bicycle riders, so that these pumps may be readily operated by the passing
riders to inflate their tires, as occasion may require, upon the introduction of the
required coin into the devices controlling the pump. The invention, however, is .not
to be understood as limited in its use to effecting this general purpose. It may be
employed for any purpose for which it may be adapted, and may be embodied in an
hydraulic pump as well as in an air pump. Moreover certain features of the inven-
tion may be used without the others, all of which will be readily understood from the
explanation of the pump herein described and shown in the drawings.
The invention consists broadly of a coin controlled pump, and more particularly of
a manually operated coin controlled air pump. The invention also consists broadly,
of the various combinations of elements to effect the several functions desired or
attained by the coin controlled mechanism, without regard to the particular form or
arrangement of the elements employed. It also consists of the various combinations
of specific elements herein shown and described. It also consists of a rack and gear
as operating means.to drive.the piston of a pump.
In the drawings forming part of this specification and in which like letters of
reference designate corresponding parts in the several figures,
Figure 1 is a vertical sectional elevation of a coin .controlled air pump embodying
all the features of my invention;
Figure 2 is a side elevation of the same, partly broken away, looking in the
direction of the arrow in Fig. 1; and
*Figures 3 and 4 are side elevations of the coin controlled devices, taken at right
angles to each other.
Referring now specifically to the embodiment of the invention shown in the
drawings, A is a cylinder forming the air or other fluid chamber, provided with an
outlet valve a to which a tube will be attached when the pump is used to inflate
bicycle tires. The piston.includes a head B of any suitable construction and a rod .B!,
preferably projecting through the end of the cylinder.
In equipping the pump with coin controlled devices it
the intention to so arrange

page_text: the construction that for the deposit of one coin the pump may operate to discharge
a predetermined maximum of fluid, as air for example, and will, thereupon, be
incapacitated for making another maximum discharge until a second coin has been
properly deposited. This object may be carried out in various ways and by various
means, all of which are within the scope of my invention. In the specific form of the
invention herein shown and described, I make one full charge of the pump the
maximum of discharge from it for one payment, and arrange that this maximum of
discharge shall be effected only by a full, single, forward stroke of the piston. If less
than the maximum discharge is desired, the piston may be stopped at any point in
it forward stroke, after which it returns to its initial position, where it is ready to
begin a new forward stroke, upon the deposit of another coin.
Furthermore, in effecting the full utility of the coin controlled pump, I provide for
obtaining less than a full discharge of the pump if desired, and, for this purpose, so
arrange the construction that after the piston has made a full stroke or a partial
stroke the pump will be incapacitated from making a subsequent full stroke until
another coin has been properly deposited. By this arrangement, it will be seen that
if the operator desires less than a maximum discharge he may obtain it by a partial
stroke of the piston, and that thereafter another coin must be properly deposited
before a subsequent maximum discharge can be obtained. My invention includes.
within its scope any means for effecting this general operation.
In unlocking the pump I provide means for temporarily detaining the deposited
coin in a definite relation to the locking device, whereby when the pump begins its
work the locking device, owing to the presence of the coin in its detained
position, shifts to the unlocked position and remains in this position until
the coin is discharged from the position in which it has been detained,
whereupon the locking device is enabled to prevent the further forward movement
of the piston until the piston has been returned to its initial position and another
coin has been deposited.
My invention includes within its scope any means for effecting this general
operation.
I will now describe the particular embodiment of the locking devices of the
invention as shown in the drawings, which is merely preferential in its relation to the
actual scope of the invention. C is a coin-controlled locking piece arranged to move
into and out of locking position and when in locking position prevent the working of
the pump by engaging the piston. This locking piece has several pins c located
along its length, which constitute a plurality of locking faces. When the pump is
at rest, with the piston in its initial position, the locking piece C hangs parallel with
the line of the piston's movement and the pins c are adapted to take under the
bifurcated lug b, which is fixed on the piston and projects outward on each side of
the piece C. In the initial position of the piston the upper pin is the one to engage
the lug b, but it is so disposed with respect to the lug b as to permit a slight forward
movement of the piston, the purpose of which will hereinafter appear. When the
piston is in an intermediate position, one of the other locking pins c will engage the
lug b, unless the locking piece is at this time out of locking position. The locking
piece C is biased to occupy its locking position by suitable means, as for example, by
the spring c¹.
When a coin is deposited to unlock the pump it comes to rest temporarily in what
I call a detainer, whereby the coin P is held in a definite position relative to the
locking piece. In the pump shown in the drawings this detainer is made in the form
of a slot d at the end of the coin tube D, from which the coin partially projects
toward and against the locking piece being kept from dropping out of the slot by
the locking piece. The locking piece has a cam surface c² immediately below the
deposited coin P, whereby when the piston moves forward the coin sweeps over the
cam surface and moves the locking piece back out of locking position. As the piston
continues its forward movement the coin holds back the locking piece. When the
piston reaches the end of its forward stroke, the coin, which has been carried below

page_text: the locking piece, is discharged by gravity and falls upon a shelf a¹ or into a drawer,
to which access may be had by the proper person through the door a². The locking
piece C carries a flange E on one of its sides and the piston rod carries a pawl E¹.
When the piston is at rest in its initial position the pawl rests on its stop pin e and
projects toward the flange E. When the piston moves forward the pawl drags down
along the flange in a position inclined slightly forward. If now the piston, after
having made a partial or full forward stroke is started back, the point of the pawl
catches on the flange E and, moving down upon its stop pin, as the piston rises,
pushes back the locking piece from contact with the coin P and causes the coin to be
thereby discharged from the detainer. The locking piece is now enabled, by means
of one of its locking faces c, to prevent a forward movement of the piston until the
piston has been returned to its initial position. If, for example, an attempt should
be made to start the piston forward from mid-stroke after the coin had been dis-
charged from the detainer, the pawl E¹ would again drag along the flange E and
permit the locking piece to move into its locking position so that one of the pins c
would engage the lug b and thereby prevent the forward movement attempted. It
will therefore be seen that by my invention, I am enabled to prevent a second
maximum discharge of the pump until a second coin has been deposited, and that in
the specific embodiment of the invention shown in the drawings, I accomplish this
result by compelling a return of the piston to its initial locked position before a
maximum discharge can be effected. It will be noted that the forward movement of
the piston does the actual work of retracting the locking piece and that this takes
place when the piston moves forward from its initial position the slight distance
corresponding to the distance between the lug b and the upper pin c.
The coin tube D may be variously arranged to direct the coin to the detainer, but I
prefer to attach it to the piston, as shown, whereby it will be carried out of reach by
the forward movement of the piston and thus prevent the fraudulent operation of the
pump by actuating the locking devices by means of a wire or other instrument
introduced into the coin tube. In the best arrangement to effect this purpose, the
tube is encased in the piston and has its mouth opening from the side of the piston
where it is accessible when the piston is in its initial position. As soon as the piston
moves forward it carries the mouth of the tube out of reach and through the opening b¹
in the casing or cylinder A in which the piston works. As thus arranged a wire
introduced into the tube, instead of the required coin, to unlock the pump, would be
immediately cut by the inouth of the tube entering the opening 61. This would of
course defeat the attempted fraud.
As operating means for the pump I employ a rack and gear which enables me to
secure adequate power with easy, accurate and rapid movement of the piston. So far
as I am aware no one has heretofore employed such means for operating a pump.
Secured to the piston rod B¹, inside the cylinder A, is the rack F, and meshing with it
is the rotatable gear G, supported on a bracket H secured to the cylinder A. The
gear G has trunnions g which are journalled in bearings h in the bracket H, and
secured to the trunnions are two long arms kk, which, with the handle k¹, constitute
the operating arm K for actuating the gear G to drive the piston. When the piston
is in its initial position the arm K and gear G are in the positions shown in
Figs. 2 and 3, in which the gear G is resting on the stop pin g'. After a proper coin
has been deposited, the arm K is pulled over by grasping the handle and the
arms pass one on each side of the cylinder A. The gear G is of such size in
relation to the rack that one full movement of the arm K drives the piston its full
forward stroke. The arm K may now return to its initial position and carry back the
piston with it. I prefer to counterbalance the arm so that when released it will
inake the return movement of itself. For this purpose the weight K is employed,
being carried on arms 22 which are extensions of the arms kk.
L is a strap
connecting the weight with the gear G, to assist in supporting the weight.
Having now particularly described and ascertained the nature of my said

page_text: invention, and in what manner the same is to be performed, I declare that
what I claim is :-
1. A pump having a rack secured to the piston, and a rotatable gear meshing with
the rack to operate the piston.
2. A pump having a rack secured to the piston, a rotatable gear meshing with the
'rack to operate the piston, and an operating arm for the gear.
piston
3. A pump having a rack secured to the piston, a rotatable gear meshing with the
rack to operate the piston, and a counterbalanced operating arm for the gear.
4. A pump including in its construction a cylinder carrying a bracket,
provided with a rack, and a rotatable gear mounted on the bracket and meshing with
the rack to operate the piston.
5. A pump including in its construction a cylinder carrying a bracket, a piston
'provided with a rack, a rotatable gear mounted on the bracket and meshing with the
rack to operate the piston, and an operating arm for the gear.
6. A pump including in its construction a cylinder carrying a bracket, a piston
provided with a rack, a rotatable gear mounted on the bracket and meshing with the
rack to operate the piston, and a counterbalanced operating arm for the gear.
7. A pump including in its construction a cylinder, a piston, a rack on the piston,
a bracket carried by the cylinder, a rotatable gear having trunnions mounted on
the bracket and in operative engagement with the rack, and an operating arm for the
gear.
8. In a coin controlled pump, the combination of means for unlocking the pump
'to effect a predetermined maximum discharge of the pump upon the proper deposit
of a coin, and means to prevent a subsequent maximum discharge until another coin
has been properly deposited.
9. In a coin controlled pump operating to effect a predetermined maximum discharge
by a full, single forward stroke of the piston, the combination of means for unlocking
the pump to effect such stroke of the piston, upon the proper deposit of a coin, and
means to prevent a subsequent full, single, forward stroke of the piston until another
coin has been properly deposited.
10. In a coin controlled pump, the combination of means for unlocking the pump
to effect a predetermined maximum discharge of the pump, upon the proper deposit
'of a coin, means for temporarily detaining the deposited coin in a definite position,
upon which the unlocking of the pump is dependent, and means for discharging the
detained coin from said position before a subsequent maximum discharge of the pump
can be effected, whereby the deposit of another coin is required before such subsequent
'discharge of the pump can be made.
11. In a coin controlled pump operating to effect a predetermined maximum
discharge by a full, single, forward stroke of the piston, the combination of means for
unlocking the pump to effect such stroke of the piston, upon the proper deposit of a
coin, means for temporarily detaining the deposited coin in a definite position, upon
which the unlocking of the pump is dependent, and means for discharging the
detained coin from said position before a subsequent full, single, forward stroke of
the piston can be effected, whereby the deposit of another coin is required before
such stroke of the piston can subsequently be made.
12. A pump having coin-controlled devices controlling the operation of the
pump.
13. A pump having coin-controlled devices controlling the operation of the pump,
said devices being so constructed and arranged as to render the pump normally
operative for only one predetermined maximum discharge, upon the introduction of
a single coin.
14. A pump having coin-controlled devices controlling the operation of the
pump, said devices being so constructed and arranged as to normally permit the
piston to move one full, single forward stroke, upon the introduction of a single
coin.
15. A pump including in its construction a cylinder, a piston, and a coin-controlled
4

page_text: locking device for the piston arranged to lock the piston against forward movement,
and having means for so locking it at a plurality of points in its forward stroke, said
locking device adapted to release the piston so as to permit it to operate for a
maximum of one full, single, forward stroke upon the introduction of a coin.
16. A pump including in its construction the combination of a cylinder, a piston,
and a coin-controlled locking device for the piston, the piston carrying a coin detainer
arranged to temporarily detain a deposited coin, and the locking device arranged to
be moved from locking position by the movement of the coin in the coin
detainer.
17. A pump including in its construction the combination of a cylinder, a piston,
and a coin-controlled locking device for the piston, the piston carrying a coin-
receiving tube and a coin-detainer to receive the coin from the tube and temporarily
detain the coin, and the locking device arranged to be moved from locking position
by the movement of the coin in the coin-detainer.
18. A pump including in its construction the combination of a cylinder, a piston
carrying a coin-detainer, a locking piece for the piston arranged to be moved from
locking position by the coin moving in the detainer, the locking piece constructed to
lock the piston against forward movement when the coin has been discharged from
the detainer.
19. A pump including in its construction the combination of a cylinder, a piston
carrying a coin detainer, a locking piece extending along the coin's line of movement
in the detainer when the piston is moving forward, and adapted to be moved from
locking position by the moving coin, the locking piece being biased to bear against
the coin and prevent it from being discharged from the detainer during the forward
movement of the piston and operating to lock the piston against further forward
movement when the coin has left the detainer.
20. A pump including in its construction the combination of a cylinder, a piston
carrying a coin-tube leading to a slot through which the coin is finally discharged, a
locking piece for the piston pivoted to hang in front of the slot whereby a coin is
enabled to temporarily rest in the slot and against the locking piece, and whereby
when the piston moves forward the coin is carried along and moves the locking piece
from locking position, the locking piece being constructed to return to locking
position when the coin has been discharged from the slot and thereafter prevent' the
piston from moving forward until it has been returned to normal position and another
coin deposited.
21. In a coin-controlled pump, the combination of a cylinder, a piston working in
the cylinder and carrying a coin-tube, the mouth of the tube being normally
accessible for the introduction of a coin and rendered inaccessible by the forward
movement of the piston.
22. In a pump, the combination of a cylinder, a piston having its rod projecting
from the cylinder, a coin-controlled locking device for the piston, a coin carried by
the piston and leading to said locking device, the tube being carried in to the cylinder
by the movement of the piston so as to cut off access to the locking device from
without.
23. In a coin-controlled mechanism, the combination of a coin-controlled locking
device, a movable coin-tube leading thereto and actuated by the moving parts of said
mechanism, said coin-tube normally accessible for the introduction of a coin and
arranged to be carried out of reach during a predetermined movement of the
mechanism.
24. A pump including in its construction the combination of a cylinder, a piston
having its rod projecting from the cylinder, a coin-tube carried by the piston having
its mouth on the side of the piston and normally projecting above the cylinder so
as to be accessible, a coin-detainer at the lower end of the tube, a coin-controlled
locking bar pivoted to hang in front of the detainer and constructed to engage the
piston, the construction being such that a deposited coin projects from the detainer
toward the locking bar whereby when the piston moves forward the coin moves the
bar from its locking position, the locking bar operating to move into locking position

page_text: when the coin has been discharged from the detainer and thereupon prevent the
further forward movement of the piston.
25. A coin-controlled pump including in its construction the combination of a
cylinder, a piston, a coin-controlled locking device for the pump, and a coin-detainer
adapted to hold the deposited coin against the locking device when the pump is
discharging and thereby move the locking device from its locking position..
26. A coin-coutrolled. pump including in its construction the combination of a
cylinder, a piston, a coin-controlled locking device for the piston, and a coin-detainer
adapted to hold the deposited coin against the locking device when the piston is
making its forward movement and thereby move the locking device from its locking
position, the locking device having a plurality of locking faces and operating to lock
the piston against further forward movement when the coin is discharged from the
detainer and until another is deposited.
27. A coin-controlled pump including in its construction the combination of a
cylinder, a piston, a coin-controlled locking device for the piston, and a coin-detainer
adapted to hold the deposited coin against the locking device when the piston is
making its forward movement and thereby move the locking device from its
locking position; and means for effecting the discharge of the coin at the proper
time.
28. A coin-controlled pump including in its construction the combination of a
cylinder, a piston, a coin-controlled locking device for the piston, and a coin-detainer
adapted to hold the deposited coin against the locking device when the piston is
making its forward movement and thereby move the locking device from its
locking position, means for effecting the discharge of the coin at the proper time,
including a pawl to engage with the locking device and effect the discharge of the
coin.
29. A coin-controlled pump including in its construction the combination of a
cylinder, a piston, a coin-controlled locking device for the piston, and a coin-detainer
adapted to hold the deposited coin against the locking device when the piston is
making its forward movement and thereby move the locking device from its locking
position, the locking device having a plurality of locking faces and operating to lock
the piston against further forward movement when the coin is discharged from the
detainer and until another is deposited, and means for effecting the discharge of the
coin at the proper time.
30. A coin-controlled pump including in its construction the combination of a
cylinder, a piston, a coin-controlled locking device for the piston, and a coin detainer
adapted to hold the deposited coin against the locking device when the piston is
making its forward movement and thereby move the locking device from its locking
position, and means to effect the discharge of the coin upon the backward move-
ment of the piston.
31. A coin-controlled pump including in its construction the combination with the
cylinder and piston, a rack carried by the piston, a rotatable gear meshing with the
rack to operate the piston, a coin-tube carried by the piston and opening from one
side thereof above the cylinder, a coin-detainer at the lower end of the tube within
the cylinder, a coin-controlled locking device for the piston inside the cylinder
opposite the coin-detainer, and provided with a plurality of locking faces adapted to
engage the piston and thereby prevent its forward movement, the locking piece and
coin-detainer so relatedly disposed as to permit a deposited coin to project from the
detainer toward the locking piece, whereby when the piston moves forward the coin
pushes the locking piece from locking position, and when the coin is discharged from
the detainer the locking piece is enabled to prevent further forward movement of the
piston until the piston has been returned to its initial position and another coin
deposited, and means to effect the discharge of the coin from the detainer when the
piston moves backward.
32. A coin-controlled pump including in its construction the combination of a
cylinder, a piston, a coin-controlled locking piece for the piston, said locking piece
and piston so arranged that upon the deposit of a coin these parts are operatively

page_text: connected together whereby the movement of the piston moves the locking piece
from its locking position.
1000
GEORGE BREWSTER GALLUP.
Witnesses:
NICHOLAS M. GOODLETT, JR.
MARTIN STETTENER.
Haseltine, Lake & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.