A Combined Wrench and Pump for Cyclists' Use.
Year: 1896

page_text: Date of Application, 29th Sept., 1896-Accepted, 31st Oct., 1896
COMPLETE SPECIFICATION.
[Communicated from abroad by ROBERT CROZIER FAWCETT, of Carrollton,
in the County of Carroll and State of Ohio, United States of America,
Merchant.]
A Combined Wrench and Pump for Cyclists' Use.
I, HENRY HARRIS LAKE, of the Firm of Haseltine, Lake & Co., Patent
Agents, 45 Southampton Buildings, in the County of Middlesex, 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:-
My invention pertains to that class of tools having the double capacity of serving
as wrenches and air pumps.
Tools of this general class have been heretofore patented, one instance of which
will be found in United States Letters Patent No. 544,726 dated August 20th 1895.
In each of such prior tools the bandle of the wrench serves also as the cylinder of
the air pump, and in each instance, the cylinder must be separated from the inner
jaw of the wrench when the tool is used as an air pump. In the improved tool as
now devised by me, the pump cylinder or handle is practically a fixture with the
inner jaw, although detachable therefrom as an essential feature in construction
and for assembling the parts, as well as to afford access to the pump piston for
repairs, the inner jaw serving not only as an essential part of the wrench, but also
as a slidable guide with relation to the pump cylinder and to the stem of the
wrench which serves as a piston rod. This novel use of the inner jaw as a part of
the air pump, requires that said jaw be provided with means whereby it may be
readily locked to the stem at various points so that it may co-operate with the
outer jaw when the tool is to serve as a monkey wrench, and also so that it may be
readily freed from engagement with the stem when the tool is to be used as an air
pump. The means for so locking and unlocking the inner jaw may be widely
varied without departure from my invention, many of the well known devices
employed in so called "quick acting" monkey wrenches being suitable for the
purpose, it being only important that the locking device when not in service, should
not be obstructive to the free movement of the stem or the inner jaw, when the
tool is in use as an air pump.
To more particularly describe my invention, I will refer to the accompanying
drawings, in which,
Figure 1 is a side view of a tool embodying my improvements adjusted to serve
as a wrench.
Figure 2 is a sectional view of the same, adjusted to serve as an air pump.
Figure 3 is a side view of the outer jaw of the wrench, with its stem and
piston.
Figure 4 is a view of the outer jaw and stem but without a tube which serves as
an air duct.
Figure 5 illustrates the tube which is inserted laterally into and secured to
the stem.
Figure 6 is a longitudinal section of the part shown in Figure 4, and
Figure 7 illustrates a modification of the locking device.
It is immaterial to the main feature of my invention, whether the compressed
air be discharged from the end of the wrench handle or from the head of the
D

page_text: wrench, although I prefer the latter, and therefore the outer jaw A has a flat sided
tubular stein a. Instead however of having a solid bored stem, I now have it
initially provided with a longitudinal channel at one side, as at a', Figure 4, for
the reception of a tube a', Figures 2, 3 and 5, which when soldered in place serves
as an air duct in proper communication with the socket coupling a, at the head or
outer jaw, and with a check valve chamber a, at the piston end of the stem, thus
economically securing a light strong tubular stem, which having a piston b at its
end, serves as a piston rod.
This stem as a part of the wrench, has one edge adapted to be engaged by a
suitable locking device carried on the inner jaw B.
The stem a, as a piston rod, must be free to slide for co-operating with the
tubular handle C which also serves as a pump barrel. As a novel feature, the
barrel or handle C is coupled directly to the base of the inner jaw, and whether
used as a mere handle or as a pump barrel it might be permanently secured thereto,
but for the purpose of assembling the parts, and for giving access to the piston b,
the barrel is detachably but firmly coupled by means of a screw threaded connection
as at Figure 2.
The handle or barrel and the inner jaw being thus connected, the slidable jaw
serves as a guide for the pump barrel with relation to the stem and the piston.
If the locking device be of the rotative screw type, as for instance the screw at c,
Figures 1 and 2, then the edge of the stem is screw threaded as at e', Figures 2 to 4,
but in all cases, there must be a capacity for complete unlocking so that the inner
jaw may slide freely on the stem, when serving as a part of the pump. As shown
in Figure 2, the screw c has no threads at one side, they being cut away, so that
when that portion of the screw lies next to the threaded edge of the stem, the
inner jaw will be free to slide on the stem, and also so that said jaw can be freely
moved to and fro, for initially setting it to a nut, as in all "quick acting" wrenches,
the screw then being turned into engagement with the stem if need be, for a closer
adjustment of the jawa, and in lucking them for wrenching duty.
Another form of locking device is shown in Figure 7, wherein a spring pawl d,
co-operates with ratchet teeth d', at the adjacent edge of the stein a, the spring d
of the pawl being double acting, for holding the pawl either in its operative or
inoperative position, thus providing for the quick acting wrench capacity and also
for releasing the inner jaw for service as a guide for the handle or cylinder, when
the latter is used as a pump barrel.
It will be seen that the edge of the stem need be threaded or notched only when
the co-operating locking device involves that form of locking arrangement, and that
it is immaterial to my invention what form of locking device may be employed, so
long as the inner jaw may be locked for wrench duty, and unlocked for pumping
duty, and render it unnecessary to detach the tubular handle from the wrench head
in order that it may serve as a pump barrel or cylinder.
With the implement constructed as described, and used as an air pump, the
usual flexible tube is employed between the socket coupling at a' and the tire to be
inflated, the head or outer jaw serving as a grasping base for the pump, as with
prior implements, but the outer jaw would serve, fairly well as a handle for the
pump, if the socket coupling and check valve should be located at the end of the
handle or cylinder as indicated in dotted lines in Figure 1, in which case the stem a,
need not be tubular,
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, as communicated to
me by my foreign correspondent, I declare that what I claim is :-
In a combined wrench and air pump, the combination substantially as herein
before described, of an outer jaw having a stem provided with a piston, an inner
jaw freely slidable on said stem, a tubular handle which also serves as a pump
barrel firmly attached to the base of said inner jaw, and a suitable device for not
only locking said. inner jaw to the stem for enabling the two jaws to co-operate

page_text: for wrench service, but also for unlocking said jaw, for enabling it and the
handle or barrel to slide freely on the stem and co-operate for service as an
air pump.
Dated this 29th day of September 1896.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.