Adjustable Tripod Head for Photographic Cameras.
Year: 1895

page_text: Date of Application, 3rd Sept., 1895
Complete Concification
LA
40th
4005
2011
4005
PROVISIONAL SPECIFICATION.
Adjustable Tripod Head for Photographic Cameras.
JOSIAH LAWTON 27 Bishop Street Hightown Manchester Joiner do hereby
declare the nature of this invention to be as follows :-
The advantages of this tripod head is, that it has a horizontal and vertical
motion, thus getting the focus with little trouble, and dispensing with the rising
and falling front. Its parts consists in a block to hold the tripod legs, two blocks
to turn horizontally, another block which is fastned to the camera, with a knuckel
joint to allow the camera to rise or fall, and a thumbscrew which fixes the head
and camera in position.
Block A is a plain piece of hardwood cut on the edge to allow the legs to slip
on the pins, the centre or block is perforated with a round hole into which the
blocks C and D works. These blocks are turned with a rablet so as to allow them
to come nearly togather in the centre of A, and are fastned with two small
screws G. these screws are loose round the head to allow play in turning the
camera.
The underside of block D is turned in spherical form to the radius of center of
knuckle joint in B and C, and is slotted for the thumbscrew E to slide in, this slot
is protected with a metal plate. The flange of block B is fastned to the camera
with small screws, the end of thumbscrew taking the position of the origanal
camera thumbscrew, with the flange longitudally across the camera. The
knuckle joint part of this block fits into a corrisponding hollow in the top of
block C, the nut F is inserted in the top of block B, and the thumbscrew goes
through the slot in D, into the nut F and tightens all the pieces rigidly togather.
The head may be detached by taking out the screw, block B remaining fixed to
the camera.
N.B. The drawings are full size for half plate cameras.
Dated this 21st der of
10OK
COMPLETE SPECIFICATION.
Adjustable Tripod Head for Photographic Cameras.
JOSIAH LAWTON 27 Bishop Street Hightown Manchester Joiner 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:-
The parts of this tripod head, consists in a part or block A to hold the tripod
legs, two pieces C and D that acts as the turntable, another part B which is fastned
to the base of the camera, and forms a cylindrical or knuckle joint, and gives the
rising and falling motion, and a thumbscrew E which fastens all the parts togather
when the camera is in position. This screw and its place is similar to the one in
general use for fastening the camera to the tripod heads.
Any tough hardwood is suitable for its construction. (For drawings please
refer to those filed with my Provisional Specifications.)

page_text: The part or block A is a circular piece of wood 4" in diameter, and 8" thick,
three notches 2" long and " deep are cut out of the edge, and parallel with it,
leaving a 2" projection between each notch.
A piece of brass plate with the ends formed into pins is fastened with screws on
to these projections, the pins are bent inward, in a line across the space, so that
outward springing legs readily slips on, or the pins may be bent outward in a line
across the projection to suit inward springing legs. Through the centre of this
block a round hole is cut 14" in dia. and acts as a socket for parts C and D to
turn in.
Part C is a circular block 24" dia. and about thick, one side is rabeted " deep
to fit easy in the hole in A, the remainder forming a collar on the flat and top side
of A, in the centre of the other side of C a semi cylindrical hollow is sunk 14" long
and 1" diameter.
Part D is a circular block about 3" diameter and 1" thick, one side is rabeted
the same as C and fits easy into the centre of A opposite to C, the other side of
D is turned in a spherical shape to the radius of 14" or the radius of centre of
hollow in C. (the object of this is to let the thumbscrew be always the same length,
as it radiates to suit elevation or depression of camera, at the same time being
perpendicular on its bearing). Across and through the centre of spherical side
of Da slot is cut about 2" long and 4" wide, or to the thickness of thumbscrew E,
this diminishes in length to suit the inclination of screw, a small slot is likewise cut
across the cylindrical hollow in C sufficient for the radiation of the screw. A metal
plate is fixed on the spherical side of D to protect the slot.
Block B has a flange to be fastened to the base of the camera with small screws,
the flange is about 3" x 2" and 4" thick, on the underside of this flange a cylindrical
shaped round is worked about of a circle 14" long and 1" dia. which fits into the
corresponding hollow in part C, thus forming a knuckle joint moving in one plane,
which gives the rising and falling movement to the camera. The nut F is inserted
in center of flange and the thumbscrew E passes through the slots in D and C
into the nut and tightens all the pieces togather. A washer on the collar of screw
with opposite sides turned into the slot minimises the shifting in tightening the
screw, C and D are held togather and kept in place by two small screws G passed
loosely through the hollow in C into D thus giving play to turn when the screw is
slackened.
Part B is fixed to the camera with the knuckle joint longitudinally across and
remaining fixed, but the rest of the head may be detached by taking out the screw.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is.
1. The purpose of the part to which the legs are attached, the hole in the
centre being the socket into which the parts on either side fits and turns, making a
horizontal turntable.
2. Likewise the part fixed to the camera forming the cylindrical or knuckle
joint giving the rising and falling movement and the thumbscrew, being perpendicular
from the base of the camera. The one length, and square on its shoulder bearing,
holding all rigidly togather, as shown and described by the drawings and
Specifications.
Dated this 7th dow of Navambor 1905
JOSIAH LAWTON.