IMPROVE- MENTS IN PUMPS to be as follows
Year: 1885

page_text: This Specification was, upon the 1st day of December 1891, Amended under
Sections 18 to 21 of the Patents, Designs, and Trade Marks Act, 1883.
[The Amendments are shown in erased and italic type.]
J FREDERICK PHILIP PRESTON of South Bank, Blackheath in the County of
Kent, Gentleman do hereby declare the nature of said invention for "IMPROVE-
MENTS IN PUMPS to be as follows:-
"
This invention mainly constitutes improvements in the pump constructions
described in the Specifications of Patents No 3917 dated 13th November 1874
and 4094 dated 22nd September 1881. According to this my invention by forming
a recess or chamber on each side of the pump head and allowing sufficient space for
the travel of bows and crank or eccentrics obtain any desired or increased length
of stroke without the large or increased diameter of pump head as heretofore usual.
This arrangement specially applies to the aforesaid pumps containing two or more
pistons but is also applicable to pumps having only one piston in the former case
I may use the same general arrangement of working parts, side passages and stuffing
boxes as described in the aforesaid patent Specifications. When only one piston
is used the general features of the pump may be similar to that in Figures 15 to 20
described in Patent Specification No 4094 above referred to; but instead of a two
throw crank with two bows as therein described, I fit a single throw crank and
bow working in the recesses in the pump head as described.
The arrangement of the side passages and valves may be similar to that shown
in Figures 15 to 20 above referred to except that when only one piston is used the
port or opening in the middle of pump barrel is omitted, and the openings into
pump barrel will be in the upper and lower parts only with valves arranged
accordingly. I may for instance arrange a passage at each side of the pump barrel
and with suction valve at bottom and delivery valve at top on each side or with a
suction valve and a delivery valve at top of one passage and at bottom of the other
passage.
The cover or diaphragm on top of pump barrel is fixed by preference by two or
more stay bolts which pass through lugs cast on the inside of the bead of the
pump, and are fixed there by lock nuts by regulating which the cover can be
readily held in its place so that a tight joint is formed, and the cover can be easily

page_text: removed when the internal working parts are required to be withdrawn. Some-
times instead of fitting recesses in the pump head I make the head of oval or other
contracted or flattened shape. Instead of forming the base plate and the lower
part of body of pump suitable for a rust joint 1 prefer to turn them to fit one in
the other, thus giving increased steadiness.
Dated this 8th day of Angust 1885
BREWER & JENSEN,
For the Applicant.
I, FREDERICK PHILIP PRESTON of South Bank, Blackheath in the County of
Kent Gentleman 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 mainly constitutes improvements in the pump constructions
described in the Specifications of Patents Nos 3917 dated 18th November 1874
and 4094 dated 22nd September 1881. According to this my invention by forming
a recess or chamber on each side of the pump head and allowing sufficient space for
the travel of bows and crank or eccentrics I obtain any desired or increased length
of stroke without the large or increased diameter of pump head as heretofore
usual.
This arrangement specially applies to the aforesaid pumps containing two pistons
but is also applicable to pumps having only one piston in the former case I may
use the same general arrangement of working parts, side passages and stuffing
boxes as described in the aforesaid patent Specifications. When only one piston is
used the general features of the pump may be similar to that in Figures 15 to 20
described in Patent Specification N° 4094 above referred to, but instead of a two
throw crank with two bows as therein described, I fit a single throw crank and
bow working in the recesses in the pump head as described.
The arrangement of the side passages and valves may be similar to that shewn
in Figures 15 to 20 above referred to except that when only one piston is used the
port or opening in the middle of pump barrel is omitted, and the openings into
pump barrel will be in the upper and lower parts only with valves arranged
accordingly. I may, for instance, arrange a passage at each side of the pump barrel
and with suction valve at bottom and delivery valve at top on each side or with a
suction valve and a delivery valve at top of one passage and at bottom of the other
passage.

page_text: The cover or diaphragm on top of pump barrel is fixed by preference by two or
more stay bolts which pass through lugs cast on the inside of the head of the
pump, and are fixed there by lock nuts, by regulating which the cover can be
readily held in its place so that a tight joint is formed, and the cover can be easily
removed when the internal working parts are required to be withdrawn. Some-
times instead of fitting recesses in the pump head I make the head of oval or other
contracted or flattened shape. Instead of forming the base plate and the lower
part of body of pump suitable for a rust joint I prefer to turn them to fit one in
the other, thus giving increased steadiness."
In the accompanying drawings I have shewn vertical sections and plans of
several forms of pumps with my improvements applied thereto.
In the vertical sectional end view and plan Figures 1 and 2 is shewn a single
piston pump in which the slotted cross head A fixed on the end of the piston rod B
is guided at each side in a recess or chamber C¹ formed on each side of the pump
head C whereby sufficient space is allowed for the travel of the crank D for any
required length of stroke without the large or increased diameter of the pump
head Cas heretofore usual. The pump head or air vessel C is formed with an
upper removable part or cap as shown, the joint or line of division passing through
the centre of the crank shaft and its stuffing boxes. E and F are passages on each
side of the pump barrel G and there is a suction valve S and a delivery valve P in
the upper part of the passage E and a suction valve S' and a delivery valve P¹ in
the lower part of the passage F. Each valve is made accessible by a separate
lateral cover with leather in a recess for forming joint.
Figure 3 is a plan view shewing a pump head of an oval or flattened form, the
guide recesses C¹ being formed not in the body of the head but between lugs formed
on the inside of the head.
Figure 4 is a sectional side elevation of the upper part of the pump shewing the
the preferred mode of fixing the cover H on the top of the pump barrel viz by two
or more stay bolts I and screw K which pass through lugs cast on the inside of
the head C and are screwed against the end of the stay bolts and fixed by check
nuts. By regulating these screws and nuts the cover H can be readily held in its
place so that a tight joint is formed and the cover can be easily removed when the
internal working parts are required to be withdrawn.
Figures 5, 6 and 7 shew three modified means for holding the cover in place
that is to say either as in Figure 5 by screws K screwed up into the cover from
below, or as in Figure 6 by bolts and nuts K or as in Figure 7 by studs K cast on
or otherwise attached to the cover and nuts. Figure 10 shows the cover fixed by
screws K screwed down from above.
Instead of forming the base plate L Figure 1 and the lower part of body M of
pump suitable for a rust joint, that is to say with a narrow intermediate space
I prefer as here shewn to turn them to fit one in the other, thus giving increased
steadiness and facilitating the removal.
In Figure 8 the same features of novelty are shewn as already described with
reference to the pump head C while the valves are differently arranged viz with a
suction valve S S₁ at bottom and a delivery valve P P at top of each side passage E.
Figure SA is a horizontal section on line A A. Figure 8 which also illustrates the mode
of connection of pump body M with base plate L.
Figure 9 is a vertical sectional end elevation of a pump with two pistons in one
barrel and Figure 10 vertical sectional side elevation of the upper part of same.
The arrangement of the guide recesses C¹ in the head C, and of the crank shafi
stuffing boxes stuffing boxes is the same as already described and the mode of
fastening the cover, viz: by means of screws which can be got at when the top of
the pump head Chas been removed is similar to those described with reference to
Figures 4, 5, 6 and 7 any one of which may be used in tlus case also. The suction
valves are arranged one centrally below the pump barrel and one in the lateral
passage E while the delivery valves are arranged one in the said passage E and the
other at the top of the other lateral passage E. The plan view Figure 11 shews

page_text: the two recesses in each side of the pump head C. Or the pump head may be
of a flattened or oval shape similar to Figure 3.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed I declare that what
I claim is: 11
First Forming the pump head C of a pump containing one or two pistons with
recesses or chambers on opposite sides forming guides for the cross head or
cross-heads whereby any desired or increased length of stroke is obtained without.
increased diameter of the pump head, also the modified form of flattened or oval
pump head guide for the same purpose substantially as set forth.
Second-The screws, bolts or studs K with or without the stays-1 in connection
with-a-pump-containing one-or-two-pistons-for-holding the pump barrel-cover H
firmly while fucilitating its removal as required substantially as-set forth.
÷
Third Fitting the-bottom-of-body-of-a-pump-containing-one-or-two-pistons
closely into the base plate for the purpose of giving increased stendiness-and
greater facility for taking apart substantially as set forth.
Fourth-The modifications herein described of the-general arrangements of the
two-piston pumps described in Figures 15 to 20-of patent No-4004- herein-referred
to, so-ne-to-adapt same ton--pump-containing only one-piston-substantially as
described.
Fifth-The-combination of any or all of the improvements herein described with
the general-arrangements-of-two-piston pumps-described-in-Figures 15 to 20 of
patent specification N° 4004 herein referred to, or-with-the-modified arrangements
of-came-pump-when-adapted for-one piston-only-substantially-as-herein-described.
Sixth The general-arrangements--and--combinations-of-parts-forming the
improved constructions of one- and two-piston--pumps--substantially-ns-described
And shewn.
JENSEN & SON,
Agents for the Applicant.

page_text: "
I FREDERICK PHILIP PRESTON of South Bank, Blackheath in the County of
Kent, Gentleman do hereby declare the nature of said invention for IMPROVE-
MENTS IN PUMPS to be as follows:-
"1
This invention mainly constitutes improvements in the pump constructions
described in the Specifications of Pateuts Nos 3917 dated 13th November 1874
and 4094 dated 22nd September 1881. According to this my invention by forming
a recess or chamber on each side of the pump head and allowing sufficient space for
the travel of bows and crank or eccentrics 1 obtain any desired or increased length
of stroke without the large or increased diameter of pump head as heretofore usual.
This arrangement specially applies to the aforesaid pumps containing two or more
pistons but is also applicable to pumps having only one piston in the former case
I may use the same general arrangement of working parts, side passages and stuffing
boxes as described in the aforesaid patent Specifications. When only one piston
is used the general features of the pump may be similar to that in Figures 15 to 20
described in Patent Specification N° 4094 above referred to; but instead of a two
throw crank with two bows as therein described, I fit a single throw crank and
bow working in the recesses in the pump head as described.
The arrangement of the side passages and valves may be similar to that shown
in Figures 15 to 20 above referred to except that when only one piston is used the
port or opening in the middle of pump barrel is omitted, and the openings into
pump barrel will be in the upper and lower parts only with valves arranged
accordingly. I may for instance arrange a passage at each side of the pump barrel
and with suction valve at bottom and delivery valve at top on each side or with a
suction valve and a delivery valve at top of one passage and at bottom of the other
passage.
The cover or diaphragm on top of pump barrel is fixed by preference by two or
more stay bolts which pass through lugs cast on the inside of the head of the
pump, and are fixed there by lock nuts by regulating which the cover can be
readily held in its place so that a tight joint is formed, and the cover can be easily
removed when the internal working parts are required to be withdrawn. Some-
times instead of fitting recesses in the pump head I make the head of oval or other
contracted or flattened shape. Instead of forming the base plate and the lower
part of body of pump suitable for a rust joint I prefer to turn them to fit one in
the other, thus giving increased steadiness.
Dated this 8th day of August 1885

page_text: I, FREDERICK PHILIP PRESTON of South Bank, Blackheath in the County of
Kent Gentleman 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 mainly constitutes improvements in the pump constructions
described in the Specifications of Patents Nos 3917 dated 13th November 1874
and 4094 dated 22nd September 1881. According to this my invention by forming
a recess or chamber on each side of the pump head and allowing sufficient space for
the travel of bows and crank or eccentrics I obtain any desired or increased length
of stroke without the large or increased diameter of pump head as heretofore
usual.
This arrangement specially applies to the aforesaid pumps containing two pistons
but is also applicable to pumps having only one piston: in the former case I may
use the same general arrangement of working parts, side passages and stuffing
boxes as described in the aforesaid patent Specifications. When only one piston is
used the general features of the pump may be similar to that in Figures 15 to 20
described in Patent Specification N° 4094 above referred to, but instead of a two
throw crank with two bows as therein described, I fit a single throw crank and
bow working in the recesses in the pump head as described.
The arrangement of the side passages and valves may be similar to that shewn
in Figures 15 to 20 above referred to except that when only one piston is used the
port or opening in the middle of pump barrel is omitted, and the openings into
pump barrel will be in the upper and lower parts only with valves arranged
accordingly. I may, for instance, arrange a passage at each side of the pump barrel
and with suction valve at bottom and delivery valve at top on each side or with a
suction valve and a delivery valve at top of one passage and at bottom of the other
passage.
The cover or diaphragm on top of pump barrel is fixed by preference by two or
more stay bolts which pass through lugs cast on the inside of the head of the
pump, and are fixed there by lock nuts, by regulating which the cover can be
readily held in its place so that a tight joint is formed, and the cover can be easily
removed when the internal working parts are required to be withdrawn. Some-
times instead of fitting recesses in the pump head I make the head of oval or other
contracted or flattened shape. Instead of forming the base plate and the lower
part of body of pump suitable for a rust joint 1 prefer to turn them to fit one in
the other, thus giving increased steadiness.
In the accompanying drawings I have shewn vertical sections and plans of
several forms of pumps with my improvements applied thereto.
In the vertical sectional end view and plan Figures 1 and 2 is shewn a single
piston pump in which the slotted cross head A fixed on the end of the piston rod B
is guided at each side in a recess or chamber C¹ formed on each side of the pump

page_text: head C whereby sufficient space is allowed for the travel of the crank D for any
required length of stroke without the large or increased diameter of the pump
head C as heretofore usual. The pump head or air vessel C is formed with an
upper removable part or cap as shown, the joint or line of division passing through
the centre of the crank shaft and its stuffing boxes. E and F are passages on each
side of the pump barrel G and there is a suction valve S and a delivery valve P in
the upper part of the passage E and a suction valve S¹ and a delivery valve P' in
the lower part of the passage F. Each valve is made accessible by a separate
lateral cover with leather in a recess for forming joint.
Figure 8 is a plan view shewing a pump head of an oval or flattened form, the
guide recesses C₁ being formed not in the body of the head but between lugs formed
on the inside of the head.
:
Figure 4 is a sectional side elevation of the upper part of the pump shewing the
the preferred mode of fixing the cover H on the top of the pump barrel.viz by two
or more stay bolts I and screw K which pass through lugs C cast on the inside of
the head C and are screwed against the end of the stay bolts and fixed by check
nuts. By regulating these screws and nuts the cover H can be readily held in its
place so that a tight joint is formed and the cover can be easily removed when the
internal working parts are required to be withdrawn.
Figures 5, 6 and 7 shew three modified means for holding the cover H in place
that is to say either as in Figure 5 by screws K screwed up into the cover from
below, or as in Figure 6 by bolts and nuts K or as in Figure 7 by studs K cast on
or otherwise attached to the cover and nuts. Figure 10 shows the cover fixed by
screws K screwed down from above.
Instead of forming the base plate L Figure 1 and the lower part of body M of
pump suitable for a rust joint, that is to say with a narrow intermediate space
I prefer as here shewn to turn them to fit one in the other, thus giving increased
steadiness and facilitating the removal.
In Figure 8 the same features of novelty are shewn as already described while
the valves are differently arranged viz with a suction valve S S at bottom and a
delivery valve P P at top of each side passage E. Figure 8A is a horizontal
section on line A A Figure 8 which also illustrates the mode of connection of pump
body M with base plate L.
Figure 9 is a vertical sectional end elevation of a pump with two pistons in one
barrel and Figure 10 vertical sectional side elevation of the upper part of same.
The arrangement of the guide recesses C in the head C, and of the crank shaft
stuffing boxes stuffing boxes is the same as already described and the mode of
fastening the cover, viz: by means of screws which can be got at when the top of
the pump head C has been removed is similar to those described with reference to
Figures 4, 5, 6 and 7 any one of which may be used in this case also. The suction
valves are arranged one centrally below the pump barrel and one in the lateral
passage E while the delivery valves are arranged one in the said passage E and the
other at the top of the other lateral passage E. The plan view Figure 11 shews
the two recesses C' in each side of the pump head C. Or the pump head may be
of a flattened or oval shape similar to Figure 3.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed I declare that what
I claim is :-
First Forming the pump head C of a pump containing one or two pistons with
recesses or chambers C₁ on opposite sides forming guides for the cross head or
cross-heads whereby any desired or increased length of stroke is obtained without
increased diameter of the pump head, also the modified form of flattened or oval
pump head guide for the same purpose substantially as set forth.
Second: The screws, bolts or studs K with or without the stays I in connection
with a pump containing one or two pistons for holding the pump barrel cover H
firmly while facilitating its removal as required substantially as set forth.

page_text: Third Fitting the bottom of body of a pump containing one or two pistons
closely into the base plate for the purpose of giving increased steadiness and
greater facility for taking apart substantially as set forth.
Fourth-The modifications herein described of the general arrangements of the
two piston pumps described in Figures 15 to 20 of patent N° 4094 herein referred
to, so as to adapt same to a pump containing only one piston substantially as
described.
Fifth-The combination of any or all of the improvements herein described with
the general arrangements of two piston pumps described in Figures 15 to 20 of
patent specification N° 4094 herein referred to, or with the modified arrangements
of same pump when adapted for one piston only substantially as herein described.
Sixth-The general arrangements and combinations of parts forming the
improved constructions of one and two piston pumps substantially as described
and shewn,