Improvements in Pruning Saws.
Year: 1890

page_text: Date of Application, 14th Nov., 1890
Complete Specification Left, 31st July, 1891-Accepted, 3rd Oct., 1891
PROVISIONAL SPECIFICATION.
Improvements in Pruning Saws.
I JOHN JACOB Holtzapffel of 64 Charing Cross, London in the County of
Middlesex Engineer do hereby declare the nature of this invention to be as
follows:-
This invention has for its object an improved method of attaching to and carrying
with a walking stick a thin bow saw somewhat similar to that used by carpenters
in bow saw frames so that the stick may serve either for a walking stick or as a
frame to stretch the saw at will.
In order to accomplish this I make in any suitable stick a saw cut or groove
running longitudinally throughout its required length sufficiently wide and deep to
contain the saw blade so that when the saw is not in use it lies concealed in the
stick being attached to it at one end, usually near the ferrule, by means of a pin
passing through the stick and a hole in the saw and having its other end held by a
sliding or other suitable catch so that the blade is retained in its place and the
stick may be used as an ordinary walking stick. At the other end of the stick I
attach my improved jaw or holder which I make of brass or other suitable material.
In using the term brass throughout I intend it to include any suitable material.
The jaw or holder may be made of brass rod simply driven into a hole at the end
of the stick and held by a transverse pin passing through it and the stick, or the
hole in the wood may be made with an internal screw-thread and the brass screwed
to attach them to each other and in each of the above cases I surround the end of
the stick with a ferrule of suitable material or as an alternative I may employ a
cap with a suitable plug made in one piece, the cap to fit on the end of the stick
and the plug to serve for the jaw or holder for the attachment of the saw. To the
projecting end of the plug I attach the free end of the saw I sometimes make a
simple cut in the end sufficiently wide to admit the saw and pass a pin through two
holes made in it and through one in the saw or I may make the pin for this with a
screw to attach it to the plug, passing through a plain hole in the saw or I file a
rebate or recess of the thickness of the saw on the side of the plug and pass a pin
with a suitable head plain or screwed through a hole in the saw and the plug to
retain the saw in its place or I may make the plug as last described and instead of
using a plain pin, which being detached may be lost I make a pin capable of being
turned round with a head and flange, part of which I file away so that it presents
the appearance of a cam or circle with a segment of it removed, and I use a second
in permanently attached to the plug to hold the saw I so arrange it that when the
aw is held by the permanent pin by means of a hole in the blade that the movable
in having its flange turned round so that it presents its flat side to the end of the
aw which being passed on to the permanent pin then allows the movable pin to be
urned round so that the part of the flange projects over the extremity of the saw
nd prevents its becoming detached from the plug or I may make the flange
lliptical to effect the same purpose. In order to avoid the inconvenience of
aving removeable parts I can employ a plain plug filed with a flat or rebate as
efore mentioned and with a permanent pin to hold the saw and before placing the
lug in the stick I can place a ring or ferrule around it, so that when in the stick
he ferrule is retained on the plug by the end of the stick and the projection of the
in, and the saw being placed on the pin the ferrule is slid downwards until it is
rrested by the pin and thereby prevents the saw from becoming detached, or I
in make a screw on the plug last described and instead of using a plain ring or
rrule I can place a screw thread inside it and so cause it to screw down to the
rmanent pin and over the end of the saw I also sometimes make the plug with a
דנס....מ

page_text: screw on it leaving a slight flange on the end furthest from the handle of the stick
and place a ring with a screw in it on the plug, through the centre of the flange I
make a cut sufficiently wide to adinit the saw and at the end of the cut I make a
hole parallel with the cut and usually slightly taper. I then either attach a taper
pin or filling piece to the end of the saw by brazing or other suitable means that
fits into the hole in the plug above mentioned and then screw the ring down to the
flange to retain the saw in its place.or I can dispense with the screw on the plug
and in the ring if I desire to do so and use a plain plug and ring as in the last
described method and instead of the aforesaid filling piece attached to the saw I
can bend the extremity of the saw round to serve the same purpose.
case the diameter of the plug placed in the stick is determined by the width of the
saw used.
In every
I generally employ sticks with a suitable amount of spring in them and with bent
or crook handles, as it facilitates the attachment of my improved jaw or holder for
the saw, but by slightly modifying the construction of the jaw or holder sticks
either straight throughout their length or with knobs may be employed.
When it is required to use the saw the first mentioned sliding catch is withdrawn
and the saw is then held only by the permanent pin passing through it and the
stick towards the ferrule end, the stick is then bent until the saw can be passed
over the pin in the jaw or holder or until the pin can be passed through the saw
into the jaw or holder and the saw is then secured in its place by one or other of
the above described methods. The stick then supplies the necessary tension
required to keep the saw extended for use.
Dated this 14th day of November 1890.
COMPLETE SPECIFICATION.
Improvements in Pruning Saws.
I, JOHN JACOB HOLTZAPFFEL of 64 Charing Cross London in the County
of Middlesex Engineer do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement :-
This invention has for its object an improved method of attaching to and carrying
with a walking stick a thin bow saw, somewhat similar to that used by carpenters
in bow saw frames, so that the stick may serve either for a walking stick, or as a
frame to stretch the saw at will.
In order to accomplish this I make in any suitable stick, a saw cut or groove
running longitudinally throughout, its required length sufficiently wide and deep to
contain the saw blade, so that when the saw is not in use, it lies concealed in the
stick, being attached to it at one end, usually near the ferrule, by means of a pin
passing through the stick, and a hole in the saw, and having its other end held by
a sliding or other suitable catch so that the blade is retained in its place and the
stick may be used as an ordinary walking stick.
A reference to the drawings in which like letters represent like parts will help to
explain the construction of my invention.
Figure 1 is a side view of a walking stick, and Figure 2 is a plan, showing the
saw A, attached to the ferrule end of the stick by means of a permanent transverse
pin B, the saw, being in the groove C; at the other end of the saw groove is a
sliding catch D, inlaid in the stick and held in its place by a plate attached by
screws. This catch serves to hold the saw in the stick; when it is used as a
walking stick. At the end of the crook, or bent end, of the stick I place my
improved jaw or holder E which I make of brass or other suitable material,
preferably screwed on its outside as shown, and screwed into the wood, which is
tapped with an internal screw to receive it. On the projecting end I make a flat
or rebate H, Figure 2. On the screw, before it is placed in the wood, I put a

page_text: ring or cover F, which is so arranged that when the end of the saw i
placed on the pin G, the ring or cover is screwed down, and retains the saw in it
place, the beforementioned rebate allowing the space necessary for the thickness o
the saw, at the same time the ring is prevented from coming off by the projection
5 of the pin G. I usually surround the wood of the bent end of the stick with a
ferrule of suitable material and pass a pin or rivet through the ferrule and the jaw
or holder to retain the whole in its place.
Figure 3 shows an alternative method of attaching the saw, the jaw or holder
being a plain plug driven into the stick and held by a pin, and the saw is held by
0 means of a plain pin passing through the jaw and the slot in which the saw is
placed.
Figures 4 and 5 are similar methods but the jaw is screwed into the stick and a
pin is screwed into the jaw and retains the saw as before.
Figures 6 and 7 show another method of attaching the saw when in use.
saw being placed on the pin G, a revolving catch is used instead of the sliding
The
ring. A segment of the catch is removed to allow the saw to be placed on the
pin G, and the catch being turned half round it projects over the end of the saw
and retains it in place.
Figure 8 is similar to Figure 1 but the jaw or catch instead of being screwed
into the wood, is made as a cap to fit on the wood and is held by a pin passing
through it and the wood.
Figure 9 shows the jaw screwed into the wood and the projecting part being a
plain cylinder, the collar F is slid down, and being turned the bayonet slot in it,
prevents its return and holds the saw on the pin.
In Figure 10 the end of the saw has a piece of metal soldered or brazed on it
and the jaw is made with a suitable transverse slot, in which it is placed, and the
screwed ring retains the whole in its place. The end of the saw may be turned
over as shown and the space may or may not be filled with a piece of metal, as
found convenient.
Figures 11 and 12 show a sliding bolt or catch in the jaw, the saw being placed
over the pin G, the bolt is pushed forward and the saw is fixed.
When it is required to use the saw, the sliding catch or bolt D, Figure 1, which
employ with any of my arrangements, is withdrawn, and the stick being slightly
ent, the hole at the end of the saw is placed over the projecting pin G, and the
liding catch is screwed or slid down-the natural spring of the stick supplying the
ension necessary to extend the saw for use.
Having now particularly described and ascertained the nature of my said inven-
on and in what manner the same is to be performed I declare that what I
aim is ;-
The modes of attachment of a saw blade to a stick substantially as above
escribed.
Dated this 31st day of July 1801