Hercules Twin-Cylinder Utility Engine 

Hercules Twin-Cylinder Utility Engine 

Craftsman: Charles “Chuck” Harty 

Knapp Collection #: 520

Catalog #: 2017.27.9 

Contributor: Paul Knapp 

This Hercules twin-cylinder utility engine was built by Charles Harty. Charles used castings and drawings provided by Bob Shores to complete the small utility engine.

Heritage House Dollhouse

Heritage House Dollhouse

Craftsman: Sara Botts

Catalog #: 2019.4.6

Donor: Van Botts

This dollhouse diorama entitled, “Heritage House,” was built by Sara Botts.

Hi Johnson .35 Model Engine 

Hi Johnson .35 Model Engine 

Craftsman: Dynamic Models 

Catalog #: 2015.22.3 

Donor: Tony Cina 

The Hi Johnson .35 is a glow ignition single-cylinder engine that first appeared in ads in 1955. The bore is .770, and the stroke is .750.

Hit-n-Miss Engine

Hit-n-Miss Engine

Craftsman: Phillip Duclos

Catalog #: 2013.50.4

Donor: George and Dorlene Root

A scratch-built hit-n-miss engine made by Phillip Duclos without any castings.

HMS Bellona Scale Model

HMS Bellona Scale Model

Craftsman: James Hastings

Catalog #: 2021.10.1

Donor: James Hastings

This scratch-built scale model HMS Bellona is a 74-gun ship on the line. The ship is historically accurate and complete down to the very smallest details.

HMS Granado 

HMS Granado 

Craftsman: Michael Titone

Catalog #: 2011.34.3 

Contributor: Michael Titone

This 1/84 scale plank-on-frame model of the HMS Granado was built by Michael Titone. Rigging is all functional. 

HMS Supply 

HMS Supply 

Craftsman: Michael Titone 

Catalog #: 2011.34.2 

Contributor: Michael Titone 

This 1/56 scale plank-on-frame model of the HMS Supply was built by Michael Titone. Rigging is all functional.

Hodgeson 7-Cylinder Radial Airplane Engine

Hodgeson 7-Cylinder Radial Airplane Engine

Craftsman: Charles “Chuck” Harty

Knapp Collection #: 525

Catalog #: 2017.27.6

Contributor: Paul Knapp 

This Hodgeson 7-cylinder radial airplane engine measures 12” in diameter, 11”-long, and weighs 10 pounds 9 ounces.

Hole Boring Bus 

Hole Boring Bus 

Craftsman: Micah Carrillo 

Catalog #: 2019.7.1 

Contributor: Micah Carrillo 

Micah Carillo designed and built this unique hole boring bus which has a sliding and rotating mechanism.

Holt 75 Caterpillar Engine

Holt 75 Caterpillar Engine

Craftsman: Reinhold Krieger

Knapp Collection #: 77

Catalog #: 2008.16.12

Contributor: Paul Knapp

This model Holt 75 Caterpillar engine is 12”-long, 7”-wide, 10”-high, and weighs 15 lbs. The Holt 75 casting kit was first introduced by Cole’s Power Models.

Holt Caterpillar Tractor Engine 

Holt Caterpillar Tractor Engine 

Craftsman: Ron Schindele

Knapp Collection #: 696

Catalog #: 2022.8.7

Contributor: Paul Knapp

Ron Schindele’s extraordinary rendition of the well-known Holt Caterpillar engine sold by Cole’s Power Models. His custom wound dynamo puts out about 40 volts.

Honey Cart Dollhouse Scene

Honey Cart Dollhouse Scene

Craftsman: Michael Sue Nanos

Catalog #: 2021.4.9

Contributor: San Diego Miniature Crafters Assn.

This dollhouse scene built by Michael Sue Nanos is entitled, “Honey Cart.”

Hoosier 3-Cylinder Air Motor

Hoosier 3-Cylinder Air Motor

Craftsman: Hoosier

Catalog #: 2014.7.6

Contributor: Edward Swenton Jr.

This Hoosier Whirlwind radial 3-cylinder air motor includes a wooden propeller.

Horizontal 4-Stroke Stationary Engine

Horizontal 4-Stroke Stationary Engine

Craftsman: Roger Butzen

Knapp Collection #: 772

Catalog #: 2024.5.14

Contributor: Paul Knapp

This horizontal 4-stroke stationary engine was built by Roger Butzen.

Horizontal Ball Piston Steam Engine

Horizontal Ball Piston Steam Engine

Craftsman: Les Cade

Catalog #: 2011.4.12

Donor: Les Cade

This horizontal ball piston steam engine was built by Les Cade. As the title suggests, the piston is made from a steel ball.

Horizontal Gas Engine

Horizontal Gas Engine

Craftsman: Russell Anderson 

Catalog #: 2019.21.8

Contributor: Steve Anderson

Russell Anderson gained the knowledge to build this horizontal gas engine, and many others, by working on farm equipment in his early years.

Horizontal Steam Engine

Horizontal Steam Engine

Craftsman: Les Cade

Catalog #: 2011.4.9

Donor: Les Cade

This single-cylinder, reversing steam engine was built from bar stock using Sherline miniature machine tools. It was scaled up from plans for a smaller engine.

Showing 20 of 1294 exhibits.

Presented by The Joe Martin Foundation for Exceptional Craftsmanship