The Production of a Cement or Glue for Joining Wood.
Year: 1892

page_text: Date of Application, 29th Mar., 1892
Complete Specification Left, 1st Dec., 1892-Accepted, 7th Jan., 1893
PROVISIONAL SPECIFICATION.
The Production of a Cement or Glue for Joining Wood.
I, CHRISTIAN WILHELM LUTHER, of Reval, Russia, Manufacturer of Wooden
Articles, do hereby declare the nature of this invention to be as follows:-
The following process has for its object, the production or manufacture of a
cement or glue for the joining of pieces of wood, such as are employed for veneered
seats, bodies of trunks, and for furniture. It is also applicable for caulking floors,
filling seams, and like uses.
The cement or binding means used for the purpose consists of about 60% of air
dried caseine, and about 40% of slaked lime.
The caseine is triturated with water to the consistence of a homogeneous paste,
and after the lime is added, it is uniformly worked. There is thus formed a
viscous, homogeneous, and highly adhesive mass, which is first grey but becomes
white throughout after prolonged trituration.
The quantity of lime may be increased up to 50% but it may also under other
circumstances be decreased to 15%. A greater increase of lime augments the
impermeability and solidity of the product.
This cement has the property of hardening about an hour after preparation into
a gelatinous mass which can be no more dissolved in water.
By using the same in workshops it is only necessary to keep the cement in motion
by means of a mixer, and to add water thereto as it becomes thick. When thus
treated, the cement remains fit for use for a period of 2 to 3 hours.
The strength of this cement is such, that articles joined by it cannot be again
separated.
f
A load required for tearing asunder, or separating a cemented joint of
1 sq. centimetre and containing caseine 50% lime 50%, would be 63.5 kilogrammes.
Best joiner's glue treated under the same circumstances is separable under a strain
of from 14 to 37 kilog. (see Wagner's Chemical Technology 1889, page 1073.
The caseine cement is used in exactly the same manner as joiners glue, the only
difference being, the former is not used warm but cold.
If several wooden pieces in layers be required to be glued, they are smeared
with the cement, and placed one upon the other, and then subjected to pressure for
about 5 hours. When the cement is dry, it is water tight.
The essential feature of my invention is :-
The manufacture of a cement (water tight) consisting of caseine and slaked lime
mixed together with water, and its employment in a cold state for the purpose of
joining up articles of wood.
1000
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said Christian Wilhelm Luther.
COMPLETE SPECIFICATION.
The Production of a Cement or Glue for Joining Wood.
I, CHRISTIAN WILHELM LUTHER, of Reval, Russia, Manufacturer of Wooden
Articles, 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 following process has for its object, the production or manufacture of a

page_text: cement or glue waterproof and watertight for the joining of pieces of wood, such
as are employed for veneered seats, bodies of trunks, and for furniture. It is also
applicable for caulking floors, filling seams, and like uses.
The cement or binding means used for the purpose consists of about 60% of air
dried caseine, and about 40% of slaked lime.
The caseine is triturated with water to the consistence of a homogeneous paste,
and after the lime is added, it is uniformly worked. There is thus formed a
viscous, homogeneous, and highly adhesive mass, which is first grey but becomes
white throughout after prolonged trituration.
The quantity of lime may be increased up to 50% but it may also under other
circumstances be decreased to 50%. A greater increase of lime augments the
impermeability and solidity of the product.
.
This cement has the property of hardening about an hour after preparation
into a gelatinous mass which can be no more dissolved in water. By using the
same in workshops it is only necessary to keep the cement in motion by means of
a mixer, and to add water thereto as it becomes thick. When thus treated, the
cement remains fit for use for a period of 2 to 3 hours.
The strength of this cement is such, that articles joined by it cannot be again
separated.
A load required for tearing asunder, or separating a cemented joint of 1 sq.
centimetre and containing caseine 50°, lime 50%, would be 63.5 kilogrammes.
Best joiner's glue treated under the same circumstances is separable under a
strain of from 14 to 37 kilog. (see Wagner's Chemical Technology 1889
page 1073).
The caseine cement is used in exactly the same manner as joiners glue, the only
difference being the former is not used warm but cold.
If several wooden pieces in layers be required to be glued, they are smeared
with the cement, and placed one upon the other, and then subjected to pressure
for about 5 hours. When the cement is dry, it is watertight.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
The manufacture of a cement (water-tight) consisting of caseine and slaked
lime mixed together with water, and its employment in a cold state for the purpose
of joining up veneers, pieces, and articles of wood.
244
1st day of December
H. GARDNER,
166, Fleet Street, London, Patent Agent,
Agent for the said Christian Wilhelm Luther.

page_text: Date of Application, 29th Mar., 1892
Complete Specification Left, 1st Dec., 1892-Accepted, 7th Jan., 1893
PROVISIONAL SPECIFICATION.
The Production of a Cement or Glue for Joining Wood.
I, CHRISTIAN WILHELM LUTHER, of Reval, Russia, Manufacturer of Wooden
Articles, do hereby declare the nature of this invention to be as follows:
The following process has for its object, the production or manufacture of a
cement or glue for the joining of pieces of wood, such as are employed for veneered
seats, bodies of trunks, and for furniture. It is also applicable for caulking floors,.
filling seams, and like uses.
The cement or binding means used for the purpose consists of about 60% of air
dried caseine, and about 40 % of slaked lime.
The caseine is triturated with water to the consistence of a homogeneous paste,
and after the lime is added, it is uniformly worked. There is thus formed a
viscous, homogeneous, and highly adhesive mass, which is first grey but becomes
white throughout after prolonged trituration.
The quantity of lime may be increased up to 50 % but it 'may also under other
circumstances be decreased to 15%. A greater increase of lime augments the
impermeability and solidity of the product.
This cement has the property of hardening about an hour after preparation into
a gelatinous mass which can be no more dissolved in water.
By using the same in workshops it is only necessary to keep the cement in motion
by means of a mixer, and to add water thereto as it becomes thick. When thus
treated, the cement remains fit for use for a period of 2 to 3 hours.
The strength of this cement is such, that articles joined by it cannot be again
separated.
A load required for tearing asunder, or separating a cemented joint of
1 sq. centimetre and containing caseine 50 % lime 50 %, would be 63.5 kilogrammes.
Best joiner's glue treated under the same circumstances is separable under a strain
of from 14 to 37 kilog. (see Wagner's Chemical Technology 1889, page 1073.
The caseine cement is used in exactly the same manner as joiners glue, the only
difference being, the former is not used warm but cold.
If several wooden pieces in layers be required to be glued, they are smeared
with the cement, and placed one upon the other, and then subjected to pressure for
about 5 hours. When the cement is dry, it is water tight.
The essential feature of my invention is :-
The manufacture of a cement (water tight) consisting of caseine and slaked lime
mixed together with water, and its employment in a cold state for the purpose of
joining up articles of wood.
COMPLETE SPECIFICATION.
The Production of a Cement or Glue for Joining Wood.
I, CHRISTIAN WILHELM LUTHER, of Reval, Russia, Manufacturer of Wooden
Articles, 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 following process has for its object, the production or manufacture of a

page_text: cement or glue waterproof and watertight for the joining of pieces of wood, such
as are employed for veneered seats, bodies of trunks, and for furniture. It is also
applicable for caulking floors, filling seams, and like uses.
The cement or binding means used for the purpose consists of about 60% of air
dried caseine, and about 40% of slaked lime.
The caseine is triturated with water to the consistence of a homogeneous paste,
and after the lime is added, it is uniformly worked. There is thus formed a
viscous, homogeneous, and highly adhesive mass, which is first grey but becomes
white throughout after prolonged trituration.
The quantity of lime may be increased up to 50 % but it may also under other
circumstances be decreased to 50%. A greater increase of lime augments the
impermeability and solidity of the product.
J
This cement has the property of hardening about an hour after preparation
into a gelatinous mass which can be no more dissolved in water. By using the
same in workshops it is only necessary to keep the cement in motion by. means, of
a mixer, and to add water thereto as it becomes thick. When thus treated, the
cement remains fit for use for a period of 2 to 3 hours.
The strength of this cement is such, that articles joined by it cannot be again
separated.
A load required for tearing asunder, or separating a comented joint of I sq.
centimetre and containing caseine 50 %, lime 50 %, would be 63.5 kilogrammes.
Best joiner's glue treated under the same circumstances is separable under a
strain of from 14 to 37 kilog. (see Wagner's Chemical Technology -1889
page 1073).
The caseine cement is used in exactly the same manner as joiners glue, the only..
difference being the former is not used warm but cold.
If several wooden pieces in layers be required to be glued, they are smeared
with the cement, and placed one upon the other, and then subjected to pressure.
for about 5 hours. When the cement is dry, it is watertight.
Having, now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
The manufacture of a cement (water-tight) consisting of caseine and slaked
lime mixed together with water, and its employment in a cold state for the purpose
of joining up veneers, pieces, and articles of wood.
The 1st day of December` 1802
The 1st day of December 1802
H. GARDNER,
166, Fleet Street, London, Patent Agent,<
Agent for the said Christian Wilhelm Luther..