A New or Improved Application of Balanced Cranks to Wood-cutting and Sawing Machines.
Year: 1899

page_text: Date of Application, 24th Oct., 1899
Complete Specification Left, 24th July, 1900-Accepted, 22nd Sept., 1900
DIONAL OF POLATION
A New or Improved Application of Balanced Cranks to Wood-cutting
and Sawing Machines.
We, GEORGE PICKLES and JOHN THOMAS PICKLES, of the Firm of John
Pickles & Son, of the Royd Iron Works, Hebden Bridge, in the County of
York, Wood-cutting Machine Makers, do hereby declare the nature of this inven-
tion to be as follows:-
Our invention refers to the application to wood-cutting machinery of balanced
cranks, so as to cause such machinery to work evenly and smoothly and with
more regularity than when such machinery is fitted with unbalanced cranks, as
hitherto used in wood-sawing machinery, whether reciprocatory wood-sawing and
cutting machines, such as vertical frame saws for sawing logs and deals, wood-
wool, veneers and the like, or log cross-cutting machines, but the use of balanced
cranks is more especially applicable to horizontal log or board-sawing machines.
In carrying out our invention we prolong the arms of the crank opposite to the
crank pin: The weight added by the prolonging of the arms is sufficient to
balance the crank when revolving. By this means the crank is balanced and
the vibration of the machine very much lessened. Consequently there is less
wear and tear of machines having balanced cranks.
11.1 1 tatalian 1200
TASKER & CROSSLEY,
Patent Agents, Halifax Agents for Applicants.
A New or Improved Application of Balanced Cranks to Wood-cutting
and Sawing Machines.
We, GEORGE PICKLES and JOHN THOMAS PICKLES, of the Firm of John
Pickles & Son, of the Royd Iron Works, Hebden Bridge, in the County of
York, Wood-cutting Machine Makers, do hereby declare the nature of this inven-
tion and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement:
-
Our invention refers to the application to wood-cutting machinery of balanced
cranks, so as to cause such machinery to work evenly and smoothly at the
same or at an increased speed and with more regularity than when fitted with
unbalanced cranks as hitherto used in wood-sawing machinery, whether recipro-
catory wood-sawing and cutting machines, such as vertical frame saws for sawing
Гр
.
071

page_text: logs and deals, wood-wool veneers and the like, or log cross-cutting machines,
but the use of balanced cranks is more especially applicable to horizontal log or
board-sawing machines.
In carrying out our invention we prolong the arms of the crank opposite to the
crank pin. The weight added by the prolonging of the arms is sufficient to
balance the crank when revolving, by which means the vibration of the machine
is very much lessened, a higher speed is attained, and there is less wear and tear
of the parts.
In the accompanying drawings illustrating our invention:-
Fig. 1, is front elevation of a crank shaft supported in side standards and
having our improvements applied;
Fig. 2, is end elevation thereof, the near side standard being removed;
Fig. 3, is front elevation and
Fig. 4, end elevation of a crank shaft shewing a slight modification or alterna-
tive application of our improvements.
Our invention consists in applying to the crank arms a, a, on the side of the
shaft 6 furthest from the crank pin e, balance weights d, d, which, in the example
shewn at Figs. 1 and 2, are secured to the ends of arms a, a, by means of bolts
or screws c, c, or the like, the ends of said arms being enlarged or splayed out to
nt a corresponding recess in the balance weight.
The said balance weights d, d, may, however, as illustrated in Figs. 3 and 4,
be made integral with the crank arms a, a, and formed by prolonging the said
arms opposite to the crank pin c
By the application of balance weights as set forth, the cranks of wood-cutting
and sawing machines are balanced when revolving, whereby the machines work
more quickly, evenly, and smoothly, and with greater regularity than when the
cranks are unbalanced as heretofore; the vibration of the machine is also very
much lessened and wear and tear reduced.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed we declare that what
we claim is: -
(1) The application to and combination with the cranks of wood-cutting and
sawing machines, of balance weights, such as d, d, secured to or made integral
with, and balancing, the cranks substantially as herein set forth.
Doted this Rud dor of Tal 1000
Doted this Red dox of Tul× 1000
TASKER & CROSSLEY,
Patent Agents, Halifax Agents for Applicants.