AN IMPROVED ARRANGEMENT OF CEMENT TESTING MACHINE
Year: 1884

page_text: PROVISIONAL
DEECIFICATION,
I VITALE DOMENICO DE MICHELE of Higham Hall, Rochester Engineer do
hereby declare the nature of my said invention for "AN IMPROVED ARRANGEMENT
OF CEMENT TESTING MACHINE," to be as follows:-
The object of this invention is a novel arrangement of cement testing machine
based upon a previous patent No 3104 granted to me on the 26th November in
the year 1870.
In the machine referred to in the specification of the above mentioned patent
I describe the use of a worm actuating a quadrant by a handle in conjunction with
a weight and an index pointer to obtain the desired test.
Now by my present invention I dispense with the worm, wheel, handle and
quadrant and substitute for them a pair of levers with weights or said levers
may be longer in proportion as to be slightly heavier than the weights thereon,
these being also heavier to the test weight as to give a preponderance for applying
the strain to the "Briquette."
An oil cataract is attached to the actuating weights if desired to regulate the
speed of the machine and thus render working Automatic.
COMPLETE SPECIFICATION.
I VITALE DOMENICO DE MICHELE of Higham Hall, Rochester, Engineer, do
hereby declare the nature of my said invention for "AN IMPROVED ARRANGE-
MENT OF CEMENT TESTING MACHINE" and in what manner the same is to be
performed to be particularly described and ascertained in and by the following
statement :-
The object of this invention is a novel arrangement of cement testing machine
hased upon
• previous natent No 2101anted in me on the 26th November in the

page_text: In the machine referred to in the specification of the above mentioned patent
I describe the use of a worm actuating a quadrant by a handle in conjunction with
a weight and an index pointer to obtain the desired test.
•
Now by my presont invention I dispense with the worm handle and quadrant
and substitute for them a pair of levers with weights or one of said levers may be
longer in proportion as to be slightly heavier than the weights thereon, these being
also heavier than the test weights so as to give a preponderance for applying the
strain to the "Briquette."
An oil cataract is attached to the actuating weights if desired to regulate the
speed of the machine and thus render working Automatic.
My invention is represented in the accompanying drawings, Figure 1 being an
elevation in which A is the actuating lever, B the weights attached thereto,
CC are the briquette clips, and D the testing lever with counterpoise E. Tho
Briquette F is tested or broken by the actuating lever A falling and raising as it
does so through the medium of the briquette the testing lever D the strain being
applied at the handle G on the actuating lever A.
When the briquette breaks, the upper and lower clips CC separate from each
other until the bolt heads H H come into contact with the lugs or flanges on the
lower clip, the testing lever D falls slightly but the index J moving up the graduated
quadrant remains at the spot it was lifted to, a spring under the index being
released by the fall of the weights and thus the breaking strain can be read off
the scale.
Figure 2 shows a portion of a testing machine with an automatic arrangement
the actuating lever A having a quarter pinion K attached which works in a
rack L connected to the piston M of the cataract N. The weights B are in this
arrangement placed farther from the fulcrum, the speed of their fall being regulated
by the cataract, which by means of the handle P can be set to break the briquette
quickly or slowly as may be desired.
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. The particular construction and arrangement of double lever apparatus
for testing cement and like briquettes as herein before described and as shown in
the annexed drawings at Figure 1.
Secondly. The employment with such double lever apparatus of a cataract
operated by or from the arm of the actuating lever or its equivalent as set forth.
LOCAL
100K