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American Bar-Lock Co., Inc
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American Bar-Lock Co letterhead
Bar-Lock Advertising Inkwell/Penholder
Bar-Lock Advertising Inkwell/Penholder
with square vault light cover for inkwell. Embossed:
"BAR-LOCK · PAT'D OCT.13-1903 · MAY 24-1904 · 2/3 ACTUAL SIZE"

Location:

Timeline:

History:

  • Patents by William L. Caldwell
  • Incorporated 8/17/1921: "American Bar-Lock Co., Queens, skylights, $75,000; L. B. and D. E. Mulford, C. H. Law; attorneys, Caldwell & Polhemus, 50 Church St." —New York Times

Paper:

Envelope from American Bar-Lock Co to Messrs. Hardy & Ryan, Waukesha, WI · 1908

Form letter from American Bar-Lock Co to Messrs. Hardy & Ryan, Waukesha, WI · 1908
Apr. 16, 1908.,
In re– Theater Bldg.
Messrs. Hardy & Ryan,
Waukesha, Wis.

Gentlemen:

Does any portion of the building in which you are interested require daylight? If so, why not get the best and strongest?
SIDEWALK and FLOOR LIGHTS: Our patented "Bar-Lock" Sidewalk and Floor Lights need no introduction. The leading railroads, corporations, architects, engineers and builders throughout the country have endorsed them. They have superseded all other constructions. They are furnished in Porcelite, galvanized or painted with patented "3"-Point Prisms or "Arch Plain" Lights and can be installed by an ordinary cement man. They are made to any size and shipped in a few days after receipt of order.
The Patented SKYLIGHT "3"-Point Prisms or "Arch Plain" Light System with "Bar-Lock" Porcelite Wrought Steel Construction containing cross steel channel bars locked into the heavy supporting steel bars, is adapted to all forms of overhead lighting and possesses advantages which give it preference over all others.
Read the enclosed circular and if interested, send for special catalogue, prices, etc.
Dic. L. W. M. Yours very truly,
AMERICAN BAR-LOCK CO.,
L. W. Mulford,
Genl. Mgr.
A FULL DESCRIPTION OF PATENTED
"BAR LOCK" VAULT LIGHTS, FLOOR
LIGHTS AND SKYLIGHTS WILL BE
FOUND IN "SWEETS INDEX."

Enclosed
circular:
Porcelite "Bar-Lock" and "3"-Point Prisms MAXIMUM STRENGTH
ILLUMINATION AND DURABILITY
ARE ONLY OBTAINED BY USING THE NEW
PORCELITE "BAR-LOCK"
WROUGHT STEEL CONSTRUCTION AND
"3"-POINT PRISMS
Absolutely better and cheaper than any other construction
now known for Pavements, Basement Illumination,
Court Areas, Balconies, Porches, etc.


American Bar-Lock Co,
Philadelphia, ca.1908, 12p
JPG ~18MB: tar|zip|pdf
PNG ~95MB: tar|zip|pdf


American Bar-Lock Company · Simplex Skylights SIMPLEX SKYLIGHTS
GUARANTEED
Water-proof — Fire-proof — Burglar-Proof
Sound-proof—No Repairs—Unrestricted Light

SIMPLEX DOUBLE-REINFORCED
CONCRETE CONSTRUCTION
NOTE THE HEAVY I-BEAM REINFORCEMENT

American Bar Lock Co
Philadelphia, ca.1915, 12p
JPG ~12MB: tar|zip|pdf
PNG ~93MB: tar|zip|pdf



Architectural File · 1920 · p.1154 Architectural File · 1920 · p.1155
Architectural File · 1920 · p.1154-1155

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